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Last Updated: April 19, 2024

Claims for Patent: 7,902,237


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Summary for Patent: 7,902,237
Title:Heterocyclic compounds as pharmaceutical agents
Abstract: Compounds, compositions and methods for modulating the activity of receptors are provided. In particular, compounds and compositions are provided for modulating the activity of receptors and for the treatment, prevention, or amelioration of one or more symptoms of the disease or disorder directly or indirectly related to the activity of the receptors.
Inventor(s): Martin; Richard (San Diego, CA), Flatt; Brenton Todd (Poway, CA), Kahl; Jeffrey Dean (San Antonio, TX)
Assignee: Exelixis, Inc. (South San Francisco, CA)
Application Number:11/573,614
Patent Claims:1. A compound having the formula (I): ##STR00057## or a pharmaceutically acceptable derivative thereof, wherein: bond a is a single bond or double bond; X.sup.1 is NR.sup.6, O or S(O).sub.t; X.sup.2 is S or O; R.sup.1 is optionally substituted alkyl, optionally substituted alkenyl or optionally substituted alkynyl, all or which, when substituted, are substituted with one to five substituents each independently selected from the group consisting of cyano, nitro, halo, pseudohalo, --OR.sup.10, --SR.sup.16, --N(R.sup.11)(R.sup.12), --C(J)R.sup.13, --C(J)OR.sup.10, --C(J)N(R.sup.11)(R.sup.12), --C(J)N(R.sup.10)N(R.sup.11)(R.sup.12), --N(R.sup.10)C(J)R.sup.13, --N(R.sup.10)C(J)OR.sup.10, --N(R.sup.10)C(J)N(R.sup.11)(R.sup.12), --OC(J)R.sup.13, --OC(J)OR.sup.10, --OC(J)N(R.sup.11)(R.sup.12), --Si(R.sup.14).sub.3, --N(R.sup.10)S(O).sub.tR.sup.15 and --R.sup.9--S(O).sub.tR.sup.15; or R.sup.1 is optionally substituted cycloalkyl, optionally substituted cycloalkylalkyl, optionally substituted heterocyclyl, optionally substituted heterocyclylalkyl, optionally substituted aryl, optionally substituted aralkyl, optionally substituted heteroaryl or optionally substituted heteroaralkyl, all of which, when substituted, are substituted with one to five substituents each independently selected from the group consisting of alkyl, haloalkyl, cycloalkyl, cycloalkylalkyl, heterocyclyl, heterocyclylalkyl, aryl, aralkyl, heteroaryl, heteroaralkyl, cyano, nitro, halo, pseudohalo, --R.sup.9--OR.sup.10, --R.sup.9--SR.sup.16, --R.sup.9--N(R.sup.11)(R.sup.12), --R.sup.9--C(J)R.sup.13, --R.sup.9--C(J)OR.sup.10, --R.sup.9--C(J)N(R.sup.11)(R.sup.12), --R.sup.9--C(J)N(R.sup.10)N(R.sup.11)(R.sup.12), --R.sup.9--N(R.sup.10)C(J)R.sup.13, --R.sup.9--N(R.sup.10)C(J)OR.sup.10, --R.sup.9--N(R.sup.10)C(J)N(R.sup.11)(R.sup.12), --R.sup.9--OC(J)R.sup.13, --R.sup.9--OC(J)OR.sup.10, --R.sup.9--OC(J)N(R.sup.11)(R.sup.12), --Si(R.sup.14).sub.3, --N(R.sup.10)S(O).sub.tR.sup.15 and --R.sup.9--S(O).sub.tR.sup.15; or R.sup.1 is --R.sup.9--N(R.sup.11)(R.sup.12), --R.sup.9--C(J)R.sup.13, --R.sup.9--C(J)OR.sup.10, --R.sup.9--C(J)N(R.sup.11)(R.sup.12), --R.sup.9--N(R.sup.10)C(J)R.sup.13, --R.sup.9--N(R.sup.10)C(J)OR.sup.10, --R.sup.9--S(O).sub.tR.sup.15 or --R.sup.9--N(R.sup.10)C(J)N(R.sup.11)(R.sup.12); R.sup.2 is optionally substituted alkyl, optionally substituted alkenyl, optionally substituted alkynyl, all or which, when substituted, are substituted with one to five substituents each independently selected from the group consisting of cyano, nitro, halo, pseudohalo, --OR.sup.10, --SR.sup.16, --N(R.sup.11)(R.sup.12), --C(J)R.sup.13, --C(J)OR.sup.10, --C(J)N(R.sup.11)(R.sup.12), --C(J)N(R.sup.10)N(R.sup.11)(R.sup.12), --N(R.sup.10)C(J)R.sup.13, --N(R.sup.10)C(J)OR.sup.10, --N(R.sup.10)C(J)N(R.sup.11)(R.sup.12), --OC(J)R.sup.13, --OC(J)OR.sup.10, --OC(J)N(R.sup.11)(R.sup.12), --Si(R.sup.14).sub.3, --N(R.sup.10)S(O).sub.tR.sup.15 and --S(O).sub.tR.sup.15; or R.sup.2 is optionally substituted cycloalkyl, optionally substituted cycloalkylalkyl, optionally substituted heterocyclyl, optionally substituted heterocyclylalkyl, optionally substituted aryl, optionally substituted heteroaryl, optionally substituted aralkyl, optionally substituted heteroaralkyl or optionally substituted aryl, all of which, when substituted, are substituted with one to five substituents each independently selected from the group consisting of alkyl, haloalkyl, cycloalkyl, cycloalkylalkyl, heterocyclyl, heterocyclylalkyl, aryl, aralkyl, heteroaryl, heteroaralkyl, cyano, nitro, halo, pseudohalo, --R.sup.9--OR.sup.10, --R.sup.9--SR.sup.16, --R.sup.9--N(R.sup.11)(R.sup.12), --R.sup.9--C(J)R.sup.13, --R.sup.9--C(J)OR.sup.10, --R.sup.9--C(J)N(R.sup.11)(R.sup.12), --R.sup.9--C(J)N(R.sup.10)N(R.sup.11)(R.sup.12), --R.sup.9--N(R.sup.10)C(J)R.sup.13, --R.sup.9--N(R.sup.10)C(J)OR.sup.10, --R.sup.9--N(R.sup.10)C(J)N(R.sup.11)(R.sup.12), --R.sup.9--OC(J)R.sup.13, --R.sup.9--OC(J)OR.sup.10, --R.sup.9--OC(J)N(R.sup.11)(R.sup.12), --Si(R.sup.14).sub.3, --N(R.sup.10)S(O).sub.tR.sup.15 and --R.sup.9--S(O).sub.tR.sup.15; or R.sup.2 is --R.sup.9--C(J)R.sup.13, --R.sup.9--C(J)OR.sup.10, --R.sup.9--C(J)N(R.sup.11)(R.sup.12), --R.sup.9--C(J)N(R.sup.10)N(R.sup.11)(R.sup.12), --R.sup.9--N(R.sup.10)C(J)R.sup.13, --R.sup.9--N(R.sup.10)C(J)OR.sup.10, --R.sup.9--N(R.sup.10)C(J)N(R.sup.11)(R.sup.12), --R.sup.9--N(R.sup.11)(R.sup.12) or --R.sup.9--S(O).sub.tR.sup.15; R.sup.3, R.sup.4 and R.sup.5 are each independently selected as in (a), (b) or (c) as follows: (a) R.sup.3, R.sup.4 and R.sup.5 are each independently optionally substituted alkyl, optionally substituted alkenyl or optionally substituted alkynyl, all of which, when substituted are substituted with cyano, nitro, halo, pseudohalo, --OR.sup.10, --SR.sup.16, --N(R.sup.11)(R.sup.12), --C(J)R.sup.13, --C(J)OR.sup.10, --C(J)N(R.sup.11)(R.sup.12), --C(J)N(R.sup.10)N(R.sup.11)(R.sup.12), --N(R.sup.10)C(J)R.sup.13, --N(R.sup.10)C(J)OR.sup.10, --N(R.sup.10)C(J)N(R.sup.11)(R.sup.12), --OC(J)R.sup.13, --OC(J)OR.sup.10, --OC(J)N(R.sup.11)(R.sup.12), --Si(R.sup.14).sub.3, --N(R.sup.10)S(O).sub.tR.sup.15 and --S(O).sub.tR.sup.15; or (b) R.sup.3, R.sup.4 and R.sup.5 are each independently optionally substituted cycloalkyl, optionally substituted cycloalkylalkyl, optionally substituted heterocyclyl, optionally substituted heterocyclylalkyl, optionally substituted aryl, optionally substituted aralkyl, optionally substituted heteroaryl, or optionally substituted heteroaralkyl, all of which, when substituted, are substituted with one to five substituents each independently selected from the group consisting of alkyl, haloalkyl, cycloalkyl, cycloalkylalkyl, heterocyclyl, heterocyclylalkyl, aryl, aralkyl, heteroaryl, heteroaralkyl, cyano, nitro, halo, pseudohalo, --R.sup.9--OR.sup.10, --R.sup.9--SR.sup.16, --R.sup.9--N(R.sup.11)(R.sup.12), --R.sup.9--C(J)R.sup.13, --R.sup.9--C(J)OR.sup.10--R.sup.9--C(J)N(R.sup.11)(R.sup.12), --R.sup.9--N(R.sup.10)C(J)R.sup.13, --R.sup.9--N(R.sup.10)C(J)OR.sup.10, --R.sup.9--N(R.sup.10)C(J)N(R.sup.11)(R.sup.12), --R.sup.9--OC(J)R.sup.13, --R.sup.9--OC(J)N(R.sup.11)(R.sup.12), --Si(R.sup.14).sub.3, --N(R.sup.10)S(O).sub.tR.sup.15 and --R.sup.9--S(O).sub.tR.sup.15; or (c) R.sup.3, R.sup.4 and R.sup.5 are each independently selected from a group consisting of hydrogen, halo, --N(R.sup.7)(R.sup.8), --N(R.sup.10)C(J)R.sup.13, --N(R.sup.10)C(J)OR.sup.10, --R.sup.9--C(J)R.sup.13, --N(R.sup.10)C(J)N(R.sup.11)(R.sup.12) and --N(R.sup.10)S(O).sub.tR.sup.15; provided that R.sup.5 is present only when bond a is a single bond; and further provided that: when R.sup.3, R.sup.4 or R.sup.5 is cycloalkylalkyl or --N(R.sup.7)(R.sup.8) and bond a is a single bond, then R.sup.1 is phenyl substituted with at least two different substituents selected from the following: cyano, --R.sup.9--C(J)R.sup.13, --R.sup.9--C(J)N(R.sup.11)(R.sup.12), --R.sup.9--C(J)N(R.sup.10)N(R.sup.12)R.sup.13, --R.sup.9--N(R.sup.10)C(J)OR.sup.10, --R.sup.9--N(R.sup.10)C(J)N(R.sup.11)(R.sup.12), --N(R.sup.10)S(O).sub.tR.sup.13, --R.sup.9--N(R.sup.10)C(J)R.sup.13, and --R.sup.9--N(R.sup.11)(R.sup.12); or when R.sup.3, R.sup.4 or R.sup.5 is alkyl, alkenyl, alkynyl, halo, haloalkyl, cycloalkyl, heterycyclylalkyl, aralkyl, --R.sup.9--C(J)R.sup.13, --R.sup.9--C(J)OR.sup.10, --R.sup.9--S(O).sub.tR.sup.15, aryl or heteroaryl, then R.sup.1 is phenyl substituted with at least two different substituents selected from the following: cyano, --R.sup.9--C(J)R.sup.13, --R.sup.9--C(J)N(R.sup.11)(R.sup.12), --R.sup.9--C(J)N(R.sup.10)N(R.sup.12)R.sup.13, --R.sup.9--N(R.sup.10)C(J)OR.sup.10, --R.sup.9--N(R.sup.10)C(J)N(R.sup.11)(R.sup.12), --N(R.sup.10)S(O).sub.tR.sup.13, --R.sup.9--N(R.sup.10)C(J)R.sup.13, and --R.sup.9--N(R.sup.11)(R.sup.12); and further provided that R.sup.3, R.sup.4 and R.sup.5 are not all hydrogen; R.sup.6 is hydrogen, alkyl, alkenyl, alkynyl, aryl, heteroaryl, cycloalkyl, heterocyclyl, aralkyl, heteroaralkyl, --R.sup.9--S(O).sub.tR.sup.15, --R.sup.9--C(J)R.sup.13, --R.sup.9--C(J)OR.sup.10 or --R.sup.9--C(J)N(R.sup.11)(R.sup.12); R.sup.7 and R.sup.8 each independently selected as in (a), (b) or (c) as follows: (a) R.sup.7 and R.sup.8 are each independently optionally substituted alkyl, optionally substituted alkenyl or optionally substituted alkynyl, all of which, when substituted, are substituted with one to three substituents each independently selected from the group consisting of cyano, nitro, halo, pseudohalo, --OR.sup.10, --SR.sup.16, --N(R.sup.11)(R.sup.12), --OR.sup.16OR.sup.10, --C(J)R.sup.13, --C(J)OR.sup.10, --C(J)N(R.sup.11)(R.sup.12), --C(J)N(R.sup.10)N(R.sup.11)(R.sup.12), --N(R.sup.10)C(J)R.sup.13, --N(R.sup.10)C(J)OR.sup.10, --N(R.sup.10)C(J)N(R.sup.11)(R.sup.12), --OC(J)R.sup.13, --OC(J)OR.sup.10, --OC(J)N(R.sup.11)(R.sup.12), --Si(R.sup.14).sub.3, --N(R.sup.10)S(O).sub.tR.sup.15 and --S(O).sub.tR.sup.15; or (b) R.sup.7 and R.sup.8 are are each independently optionally substituted cycloalkyl, optionally substituted cycloalkylalkyl, optionally substituted heterocyclyl, optionally substituted heterocyclylalkyl, optionally substituted aryl, optionally substituted aralkyl, optionally substituted heteroaryl or optionally substituted heteroaralkyl, all of which, when substituted, are substituted with one to five substituents each independently selected from the group consisting of alkyl, haloalkyl, cycloalkyl, cycloalkylalkyl, heterocyclyl, heterocyclylalkyl, aryl, aralkyl, heteroaryl, heteroaralkyl, cyano, nitro, halo, pseudohalo, --R.sup.9--OR.sup.10, --R.sup.9--OR.sup.16OR.sup.16OR.sup.10, --R.sup.9--SR.sup.16, --R.sup.9--N(R.sup.11)(R.sup.12), --R.sup.9--C(J)R.sup.13, --R.sup.9--C(J)OR.sup.10, --R.sup.9--C(J)N(R.sup.11)(R.sup.12), --R.sup.9--N(R.sup.10)C(J)R.sup.13, --R.sup.9--N(R.sup.10)C(J)OR.sup.10, --R.sup.9--N(R.sup.10)C(J)N(R.sup.11)(R.sup.12), --R.sup.9--C(J)N(R.sup.10)N(R.sup.11)(R.sup.12), --R.sup.9--OC(J)R.sup.13, --R.sup.9--OC(J)OR.sup.10, --R.sup.9--OC(J)N(R.sup.11)(R.sup.12), --Si(R.sup.14).sub.3, --N(R.sup.10)S(O).sub.tR.sup.15 and --R.sup.9--S(O).sub.tR.sup.15; or (c) R.sup.7 and R.sup.8 are each independently hydrogen, --C(J)R.sup.13, --C(J)OR.sup.10, --C(J)N(R.sup.11)(R.sup.12), --N(R.sup.10)C(J)OR.sup.10 or --S(O).sub.tR.sup.15 provided, however, that both R.sup.7 and R.sup.8 cannot be hydrogen; or R.sup.7 and R.sup.8 together with the nitrogen atom to which they are attached, form an optionally substituted heterocyclyl or an optionally substituted heteroaryl, either of which, when substituted, are substituted with one to five substituents each independently selected from the group consisting of alkyl, haloalkyl, cycloalkyl, cycloalkylalkyl, heterocyclyl, heterocyclylalkyl, aryl, aralkyl, heteroaryl, heteroaralkyl, cyano, nitro, halo, pseudohalo, --R.sup.9--OR.sup.10, --R.sup.9--OR.sup.16OR.sup.10, --R.sup.9--SR.sup.16, --R.sup.9--N(R.sup.11)(R.sup.12), --R.sup.9--C(J)R.sup.13, --R.sup.9--C(J)OR.sup.10, --R.sup.9--C(J)N(R.sup.11)(R.sup.12), --R.sup.9--C(J)N(R.sup.10)N(R.sup.12), --R.sup.9--N(R.sup.10)C(J)R.sup.13, --R.sup.9--N(R.sup.10)C(J)OR.sup.10, --R.sup.9--N(R.sup.10)C(J)N(R.sup.11)(R.sup.12), --R.sup.9--OC(J)R.sup.13, --R.sup.9--OC(J)OR.sup.10, --R.sup.9--OC(J)N(R.sup.11)(R.sup.12), --Si(R.sup.14).sub.3, --N(R.sup.10)S(O).sub.tR.sup.15 and --S(O).sub.tR.sup.15; each R.sup.9 is independently a direct bond or a straight or branched alkylene chain; R.sup.10 and R.sup.13 are each independently hydrogen, alkyl, alkenyl, alkynyl, haloalkyl, cycloalkyl, cycloalkylalkyl, heterocyclyl, heterocyclylalkyl, aryl, aralkyl, heteroaryl or heteroaralkyl; R.sup.11 and R.sup.12 are each independently hydrogen, alkyl, alkenyl, alkynyl, haloalkyl, cycloalkyl, cycloalkylalkyl, heterocyclyl, heterocyclylalkyl, aryl, aralkyl, heteroaryl or heteroaralkyl; or R.sup.11 and R.sup.12 together with the nitrogen atom to which they are attached, form a heterocyclyl, heterocyclylalkenyl, or heteroaryl; R.sup.14 R.sup.15 and R.sup.16 are each independently alkyl, alkenyl, alkynyl, haloalkyl, cycloalkyl, cycloalkylalkyl, heterocyclyl, heterocyclylalkyl, aryl, aralkyl, heteroaryl or heteroaralkyl; each J is independently O or S; and each t is independently 0 to 2.

2. A compound of claim 1 having the formula (II): ##STR00058## or a pharmaceutically acceptable derivative thereof, wherein side a is a single bond and wherein R.sup.1-R.sup.5, X.sup.1 and X.sup.2 are as defined in claim 1.

3. A compound of claim 2 wherein: X.sup.1 is S; X.sup.2 is O; and R.sup.3, R.sup.4 and R.sup.5 are each independently selected as in (a) or (c) as follows: (a) R.sup.3, R.sup.4 and R.sup.5 are each independently optionally substituted alkyl, optionally substituted alkenyl or optionally substituted alkynyl, all of which, when substituted are substituted with cyano, nitro, halo, pseudohalo, --OR.sup.10, --SR.sup.16, --N(R.sup.11)(R.sup.12), --C(J)R.sup.13, --C(J)OR.sup.10, --C(J)N(R.sup.11)(R.sup.12), --C(J)N(R.sup.10)N(R.sup.11)(R.sup.12), --N(R.sup.10)C(J)R.sup.13, --N(R.sup.10)C(J)OR.sup.10, --N(R.sup.10)C(J)N(R.sup.11)(R.sup.12), --OC(J)R.sup.13, --OC(J)OR.sup.10, --OC(J)N(R.sup.11)(R.sup.12), --Si(R.sup.14).sub.3, --N(R.sup.10)S(O).sub.tR.sup.15 and --S(O).sub.tR.sup.15; or (c) R.sup.3, R.sup.4 and R.sup.5 are each independently selected from a group consisting of hydrogen, halo, --N(R.sup.7)(R.sup.8), --N(R.sup.10)C(J)R.sup.13, --N(R.sup.10)C(J)OR.sup.10, --R.sup.9--C(J)R.sup.13, --N(R.sup.10)C(J)N(R.sup.11)(R.sup.12) and --N(R.sup.10)S(O).sub.tR.sup.15.

4. A compound of claim 3 wherein: R.sup.1 is optionally substituted cycloalkyl, optionally substituted heterocyclyl, optionally substituted aryl or optionally substituted heteroaryl, all of which, when substituted, are substituted with one to five substituents each independently selected from the group consisting of alkyl, haloalkyl, cycloalkyl, cycloalkylalkyl, heterocyclyl, heterocyclylalkyl, aryl, aralkyl, heteroaryl, heteroaralkyl, cyano, nitro, halo, pseudohalo, --R.sup.9--OR.sup.10, --R.sup.9--SR.sup.16, --R.sup.9--N(R.sup.11)(R.sup.12), --R.sup.9--C(J)R.sup.13, --R.sup.9--C(J)OR.sup.10, --R.sup.9--C(J)N(R.sup.11)(R.sup.12), --R.sup.9--C(J)N(R.sup.10)N(R.sup.11)(R.sup.12), --R.sup.9--N(R.sup.10)C(J)R.sup.13, --R.sup.9--N(R.sup.10)C(J)OR.sup.10, --R.sup.9--N(R.sup.10)C(J)N(R.sup.11)(R.sup.12), --R.sup.9--OC(J)R.sup.13, --R.sup.9--OC(J)OR.sup.10, --R.sup.9--OC(J)N(R.sup.11)(R.sup.12), --Si(R.sup.14).sub.3, --N(R.sup.10)S(O).sub.tR.sup.15 and --R.sup.9--S(O).sub.tR.sup.15; and R.sup.2 is optionally substituted cycloalkyl, optionally substituted cycloalkylalkyl, optionally substituted heterocyclyl, optionally substituted heterocyclylalkyl, optionally substituted aralkyl or optionally substituted heteroaralkyl, optionally substituted with one to five substituents each independently selected from the group consisting of alkyl, haloalkyl, cycloalkyl, cycloalkylalkyl, heterocyclyl, heterocyclylalkyl, aryl, aralkyl, heteroaryl, heteroaralkyl, cyano, nitro, halo, pseudohalo, --R.sup.9--OR.sup.10, --R.sup.9--SR.sup.16 and --R.sup.9--N(R.sup.11)(R.sup.12).

5. A compound of claim 2 wherein: X.sup.1 is S; X.sup.2 is O; R.sup.1 is optionally substituted alkyl, optionally substituted with one to five substituents each independently selected from the group consisting of cyano, nitro, halo, pseudohalo, --OR.sup.10, --SR.sup.16, and --N(R.sup.11)(R.sup.12); or R.sup.1 is optionally substituted cycloalkyl, optionally substituted heterocyclyl, optionally substituted aryl or optionally substituted heteroaryl, all of which, when substituted, are substituted with one to five substituents each independently selected from the group consisting of alkyl, haloalkyl, cycloalkyl, cycloalkylalkyl, heterocyclyl, heterocyclylalkyl, aryl, aralkyl, heteroaryl, heteroaralkyl, cyano, nitro, halo, pseudohalo, --R.sup.9--OR.sup.10, --R.sup.9--SR.sup.16, --R.sup.9--N(R.sup.11)(R.sup.12), --R.sup.9--C(J)R.sup.13, --R.sup.9--C(J)OR.sup.10, --R.sup.9--C(J)N(R.sup.11)(R.sup.12), --R.sup.9--C(J)N(R.sup.10)N(R.sup.11)(R.sup.12), --R.sup.9--N(R.sup.10)C(J)R.sup.13, --R.sup.9--N(R.sup.10)C(J)OR.sup.10, --R.sup.9--N(R.sup.10)C(J)N(R.sup.11)(R.sup.12), --R.sup.9--OC(J)R.sup.13, --R.sup.9--OC(J)OR.sup.10, --R.sup.9--OC(J)N(R.sup.11)(R.sup.12), --Si(R.sup.14).sub.3, --N(R.sup.10)S(O).sub.tR.sup.15 and --R.sup.9--S(O).sub.tR.sup.15; R.sup.2 is optionally substituted alkyl or optionally substituted alkenyl, optionally substituted with one to five substituents each independently selected from the group consisting of cyano, nitro, halo, pseudohalo, --OR.sup.10, --SR.sup.16 and --N(R.sup.11)(R.sup.12), or R.sup.2 is optionally substituted cycloalkyl, optionally substituted cycloalkylalkyl, optionally substituted heterocyclyl, optionally substituted heterocyclylalkyl, optionally substituted aralkyl or optionally substituted heteroaralkyl, optionally substituted with one to five substituents each independently selected from the group consisting of alkyl, haloalkyl, cycloalkyl, cycloalkylalkyl, heterocyclyl, heterocyclylalkyl, aryl, aralkyl, heteroaryl, heteroaralkyl, cyano, nitro, halo, pseudohalo, --R.sup.9--OR.sup.10, --R.sup.9--SR.sup.16 and --R.sup.9--N(R.sup.11)(R.sup.12); R.sup.3, R.sup.4 and R.sup.5 are each independently selected as in (a), (b) or (c) as follows: (a) R.sup.3, R.sup.4 and R.sup.5 are each independently optionally substituted alkyl or optionally substituted alkenyl, either of which, when substituted is substituted with cyano, nitro, halo, pseudohalo, --OR.sup.10, --SR.sup.16, --N(R.sup.11)(R.sup.12), --C(J)R.sup.13, --C(J)OR.sup.10, --C(J)N(R.sup.11)(R.sup.12), --C(J)N(R.sup.10)N(R.sup.11)(R.sup.12), --N(R.sup.10)C(J)R.sup.13, --N(R.sup.10)C(J)OR.sup.10, --N(R.sup.10)C(J)N(R.sup.11)(R.sup.12), --OC(J)R.sup.13, --OC(J)OR.sup.10, --OC(J)N(R.sup.11)(R.sup.12), --Si(R.sup.14).sub.3, --N(R.sup.10)S(O).sub.tR.sup.15 and --S(O).sub.tR.sup.15; (b) R.sup.3, R.sup.4 and R.sup.5 are each independently optionally substituted cycloalkyl, optionally substituted cycloalkylalkyl, optionally substituted heterocyclyl, optionally substituted heterocyclylalkyl, optionally substituted aryl, optionally substituted aralkyl, optionally substituted heteroaryl, or optionally substituted heteroaralkyl, all of which, when substituted, are substituted with one to five substituents each independently selected from the group consisting of alkyl, haloalkyl, cycloalkyl, cycloalkylalkyl, heterocyclyl, heterocyclylalkyl, aryl, aralkyl, heteroaryl, heteroaralkyl, cyano, nitro, halo, pseudohalo, --R.sup.9--OR.sup.10, --R.sup.9--SR.sup.16, --R.sup.9--N(R.sup.11)(R.sup.12), --R.sup.9--C(J)R.sup.13, --R.sup.9--C(J)OR.sup.10, --R.sup.9--C(J)N(R.sup.11)(R.sup.12), --R.sup.9--N(R.sup.10)C(J)R.sup.13, --R.sup.9--N(R.sup.10)C(J)OR.sup.10, --R.sup.9--N(R.sup.10)C(J)N(R.sup.11)(R.sup.12), --R.sup.9--OC(J)R.sup.13, --R.sup.9--OC(J)OR.sup.10, --R.sup.9--OC(J)N(R.sup.11)(R.sup.12), --Si(R.sup.14).sub.3, --N(R.sup.10)S(O).sub.tR.sup.15 and --R.sup.9--S(O).sub.tR.sup.15; or (c) R.sup.3, R.sup.4 and R.sup.5 are each independently hydrogen or --R.sup.9--C(J)R.sup.13.

6. A compound of claim 5 wherein: R.sup.1 is optionally substituted cycloalkyl, optionally substituted heterocyclyl, optionally substituted aryl or optionally substituted heteroaryl, all of which, when substituted, are substituted with one to five substituents each independently selected from the group consisting of alkyl, haloalkyl, cycloalkyl, cycloalkylalkyl, heterocyclyl, heterocyclylalkyl, aryl, aralkyl, heteroaryl, heteroaralkyl, cyano, nitro, halo, pseudohalo, --R.sup.9--OR.sup.10, --R.sup.9--SR.sup.16, --R.sup.9--N(R.sup.11)(R.sup.12), --R.sup.9--C(J)R.sup.13, --R.sup.9--C(J)OR.sup.10, --R.sup.9--C(J)N(R.sup.11)(R.sup.12), --R.sup.9--C(J)N(R.sup.10)N(R.sup.11)(R.sup.12), --R.sup.9--N(R.sup.10)C(J)R.sup.13, --R.sup.9--N(R.sup.10)C(J)OR.sup.10, --R.sup.9--N(R.sup.10)C(J)N(R.sup.11)(R.sup.12), --R.sup.9--OC(J)R.sup.13, --R.sup.9--OC(J)OR.sup.10, --R.sup.9--OC(J)N(R.sup.11)R.sup.12), --Si(R.sup.14).sub.3, --N(R.sup.10)S(O).sub.tR.sup.15 and --R.sup.9--S(O).sub.tR.sup.15; and R.sup.2 is optionally substituted cycloalkyl, optionally substituted cycloalkylalkyl, optionally substituted heterocyclyl, optionally substituted heterocyclylalkyl, optionally substituted aralkyl or optionally substituted heteroaralkyl, optionally substituted with one to five substituents each independently selected from the group consisting of alkyl, haloalkyl, cycloalkyl, cycloalkylalkyl, heterocyclyl, heterocyclylalkyl, aryl, aralkyl, heteroaryl, heteroaralkyl, cyano, nitro, halo, pseudohalo, --R.sup.9--OR.sup.10, --R.sup.9--SR.sup.16 and --R.sup.9--N(R.sup.11)(R.sup.12).

7. A compound of claim 6 wherein the compound is 2-(5-acetyl-2-ethylamino-phenylimino)-3-benzyl-5-(2-oxo-2-phenylethyl)-th- iazolidin-4-one; 2-(5-acetyl-2-ethylamino-phenylimino)-3,5-dibenzyl-thiazolidin-4-one; and 2-(5-acetyl-2-ethylamino-phenylimino)-3-benzyl-5-phenethyl-thiazolidin-4-- one.

8. A compound of claim 1 having the formula (III) ##STR00059## or a pharmaceutically acceptable derivative thereof, wherein bond a is a double bond.

9. A compound of claim 8 wherein: X.sup.1 is S; X.sup.2 is O; R.sup.1 is optionally substituted alkyl, optionally substituted with one to five substituents each independently selected from the group consisting of cyano, nitro, halo, pseudohalo, --OR.sup.10, --SR.sup.16, and --N(R.sup.11)(R.sup.12); or R.sup.1 is optionally substituted cycloalkyl, optionally substituted heterocyclyl, optionally substituted aryl or optionally substituted heteroaryl, all of which, when substituted, are substituted with one to five substituents each independently selected from the group consisting of alkyl, haloalkyl, cycloalkyl, cycloalkylalkyl, heterocyclyl, heterocyclylalkyl, aryl, aralkyl, heteroaryl, heteroaralkyl, cyano, nitro, halo, pseudohalo, --R.sup.9--OR.sup.10, --R.sup.9--SR.sup.16, --R.sup.9--N(R.sup.11)(R.sup.12), --R.sup.9--C(J)R.sup.13, --R.sup.9--C(J)OR.sup.10, --R.sup.9--C(J)N(R.sup.11)(R.sup.12), --R.sup.9--C(J)N(R.sup.10)N(R.sup.11)(R.sup.12), --R.sup.9--N(R.sup.10)C(J)R.sup.13, --R.sup.9--N(R.sup.10)C(J)OR.sup.10, --R.sup.9--N(R.sup.10)C(J)N(R.sup.11)(R.sup.12), --R.sup.9--OC(J)R.sup.13, --R.sup.9--OC(J)OR.sup.10, --R.sup.9--OC(J)N(R.sup.11)(R.sup.12), --Si(R.sup.14).sub.3, --N(R.sup.10)S(O).sub.tR.sup.15 and --R.sup.9--S(O).sub.tR.sup.15; R.sup.2 is optionally substituted alkyl or optionally substituted alkenyl, optionally substituted with one to five substituents each independently selected from the group consisting of cyano, nitro, halo, pseudohalo, --OR.sup.10, --SR.sup.16 and --N(R.sup.11)(R.sup.12), or R.sup.2 is optionally substituted cycloalkyl, optionally substituted cycloalkylalkyl, optionally substituted heterocyclyl, optionally substituted heterocyclylalkyl, optionally substituted aralkyl or optionally substituted heteroaralkyl, optionally substituted with one to five substituents each independently selected from the group consisting of alkyl, haloalkyl, cycloalkyl, cycloalkylalkyl, heterocyclyl, heterocyclylalkyl, aryl, aralkyl, heteroaryl, heteroaralkyl, cyano, nitro, halo, pseudohalo, --R.sup.9--OR.sup.10, --R.sup.9--SR.sup.16 and --R.sup.9--N(R.sup.11)(R.sup.12); R.sup.3 and R.sup.4 are each independently selected as in (a), (b) or (c) as follows: (a) R.sup.3 and R.sup.4 are each independently optionally substituted alkyl, optionally substituted alkenyl or optionally substituted alkynyl, all of which, when substituted are substituted with cyano, nitro, halo, pseudohalo, --OR.sup.10, --SR.sup.16, --N(R.sup.11)(R.sup.12), --C(J)R.sup.13, --C(J)OR.sup.10, --C(J)N(R.sup.11)(R.sup.12), --C(J)N(R.sup.10)N(R.sup.11)(R.sup.12), --N(R.sup.10)C(J)R.sup.13, --N(R.sup.10)C(J)OR.sup.10, --N(R.sup.10)C(J)N(R.sup.11)(R.sup.12), --OC(J)R.sup.13, --OC(J)OR.sup.10, --OC(J)N(R.sup.11)(R.sup.12), --Si(R.sup.14).sub.3, --N(R.sup.10)S(O).sub.tR.sup.15 and --S(O).sub.tR.sup.15; (b) R.sup.3 and R.sup.4 are each independently optionally substituted cycloalkyl, optionally substituted cycloalkylalkyl, optionally substituted heterocyclyl, optionally substituted heterocyclylalkyl, optionally substituted aryl, optionally substituted aralkyl, optionally substituted heteroaryl, or optionally substituted heteroaralkyl, all of which, when substituted, are substituted with one to five substituents each independently selected from the group consisting of alkyl, haloalkyl, cycloalkyl, cycloalkylalkyl, heterocyclyl, heterocyclylalkyl, aryl, aralkyl, heteroaryl, heteroaralkyl, cyano, nitro, halo, pseudohalo, --R.sup.9--OR.sup.10, --R.sup.9--SR.sup.16, --R.sup.9--N(R.sup.11)(R.sup.12), --R.sup.9--C(J)R.sup.13, --R.sup.9--C(J)OR.sup.10, --R.sup.9--C(J)N(R.sup.11)(R.sup.12), --R.sup.9--N(R.sup.10)C(J)R.sup.13, --R.sup.9--N(R.sup.10)C(J)OR.sup.10, --R.sup.9--N(R.sup.10)C(J)N(R.sup.11)(R.sup.12), --R.sup.9--OC(J)R.sup.13, --R.sup.9--OC(J)OR.sup.10, --R.sup.9--OC(J)N(R.sup.11)(R.sup.12), --Si(R.sup.14).sub.3, --N(R.sup.10)S(O).sub.tR.sup.15 and --R.sup.9--S(O).sub.tR.sup.15; or (c) R.sup.3 and R.sup.4 are each independently hydrogen or --R.sup.9--C(J)R.sup.13; provided that when R.sup.3 or R.sup.4 is alkyl, alkenyl, alkynyl, halo, haloalkyl, cycloalkyl, --R.sup.9--C(J)R.sup.13, aryl or heteroaryl, then R.sup.1 is phenyl and R.sup.1 is substituted with at least two different substituents selected from the following: cyano, --R.sup.9--C(J)R.sup.13, --R.sup.9--C(J)OR.sup.10, --R.sup.9--C(J)N(R.sup.11)(R.sup.12), --R.sup.9--C(J)N(R.sup.10)N(R.sup.12)R.sup.13, --R.sup.9--N(R.sup.10)C(J)OR.sup.10, --R.sup.9--N(R.sup.10)C(J)N(R.sup.11)(R.sup.12), --N(R.sup.10)S(O).sub.tR.sup.13, --R.sup.9--N(R.sup.10)C(J)R.sup.13, and --R.sup.9--N(R.sup.11)(R.sup.12); and further provided, however, that both R.sup.3 and R.sup.4 cannot be hydrogen.

10. The compound of claim 9 selected from the group consisting of the following: 2-(5-acetyl-2-ethylamino-phenylimino)-3-benzyl-5-benzylidene-thiazolidin-- 4-one; and 2-(5-acetyl-2-ethylamino-phenylimino)-3-benzyl-5-furan-2-ylmeth- ylene-thiazolidin-4-one.

11. A compound of claim 9 having the formula (IVa or IVb): ##STR00060## or a pharmaceutically acceptable derivative thereof.

12. A compound of claim 11 wherein: R.sup.7 and R.sup.8 are selected as in (a), (b) or (c) as follows: (a) R.sup.7 and R.sup.8 are each independently optionally substituted alkyl, optionally substituted alkenyl or optionally substituted alkynyl, optionally substituted with cyano, nitro, halo, pseudohalo, --OR.sup.10, --SR.sup.16, --N(R.sup.11)(R.sup.12), --OR.sup.16OR.sup.10, --C(J)R.sup.13, --C(J)OR.sup.10, --C(J)N(R.sup.11)(R.sup.12), --C(J)N(R.sup.10)N(R.sup.11)(R.sup.12), --N(R.sup.10)C(J)R.sup.13, --N(R.sup.10)C(J)OR.sup.10, --N(R.sup.10)C(J)N(R.sup.11)(R.sup.12), --OC(J)R.sup.13, --OC(J)OR.sup.10, --OC(J)N(R.sup.11)(R.sup.12), --Si(R.sup.14).sub.3, --N(R.sup.10)S(O).sub.tR.sup.15 and --S(O).sub.tR.sup.15; or (b) R.sup.7 and R.sup.8 are each independently optionally substituted cycloalkyl, optionally substituted cycloalkylalkyl, optionally substituted heterocyclyl, optionally substituted heterocyclylalkyl, optionally substituted aryl, optionally substituted aralkyl, optionally substituted heteroaryl or optionally substituted heteroaralkyl, all of which, when substituted, are substituted with one to five substituents each independently selected from the group consisting of alkyl, haloalkyl, cycloalkyl, cycloalkylalkyl, heterocyclyl, heterocyclylalkyl, aryl, aralkyl, heteroaryl, heteroaralkyl, cyano, nitro, halo, pseudohalo, --R.sup.9--OR.sup.10, --R.sup.9--OR.sup.16OR.sup.10, --R.sup.9--SR.sup.16, --R.sup.9--N(R.sup.11)(R.sup.12), --R.sup.9--C(J)R.sup.13, --R.sup.9--C(J)OR.sup.10, --R.sup.9--C(J)N(R.sup.11)(R.sup.12), --R.sup.9--N(R.sup.10)C(J)R.sup.13, --R.sup.9--N(R.sup.10)C(J)OR.sup.10, --R.sup.9--N(R.sup.10)C(J)N(R.sup.11)(R.sup.12), --R.sup.9--C(J)N(R.sup.10)N(R.sup.11)(R.sup.12), --R.sup.9--OC(J)R.sup.13, --R.sup.9--OC(J)OR.sup.10, --R.sup.9--OC(J)N(R.sup.11)(R.sup.12), --Si(R.sup.14).sub.3, --N(R.sup.10)S(O).sub.tR.sup.15 and --R.sup.9--S(O).sub.tR.sup.15; or (c) one of R.sup.7 and R.sup.8 is hydrogen and the other of R.sup.7 and R.sup.8 is selected as in (a) or (b) above; or R.sup.7 and R.sup.8 together with the nitrogen atom to which they are attached, form an optionally substituted heterocyclyl or an optionally substituted heteroaryl, all of which, when substituted, are substituted with one to five substituents each independently selected from the group consisting of alkyl, haloalkyl, cycloalkyl, cycloalkylalkyl, heterocyclyl, heterocyclylalkyl, aryl, aralkyl, heteroaryl, heteroaralkyl, cyano, nitro, halo, pseudohalo, --R.sup.9--OR.sup.10, --R.sup.9--OR.sup.16OR.sup.10, --R.sup.9--SR.sup.16, --R.sup.9--N(R.sup.11)(R.sup.12), --R.sup.9--C(J)R.sup.13, --R.sup.9--C(J)OR.sup.10, --R.sup.9--C(J)N(R.sup.11)(R.sup.12), --R.sup.9--C(J)N(R.sup.10)N(R.sup.11)(R.sup.12), --R.sup.9--N(R.sup.10)C(J)R.sup.13, --R.sup.9--N(R.sup.10)C(J)OR.sup.10, --R.sup.9--N(R.sup.10)C(J)N(R.sup.11)(R.sup.12), --R.sup.9--OC(J)R.sup.13, --R.sup.9--OC(J)OR.sup.10, --R.sup.9--OC(J)N(R.sup.11)(R.sup.12), --Si(R.sup.14).sub.3, --N(R.sup.10)S(O).sub.tR.sup.15 and --S(O).sub.tR.sup.15.

13. A compound of claim 12 wherein: X.sup.1 is S; X.sup.2 is O; R.sup.1 is optionally substituted alkyl or optionally substituted alkenyl, optionally substituted with one to five substituents each independently selected from the group consisting of cyano, nitro, halo, pseudohalo, --OR.sup.10, --SR.sup.16 and --N(R.sup.11)(R.sup.12), or R.sup.1 is optionally substituted cycloalkyl, optionally substituted heterocyclyl, optionally substituted aryl or optionally substituted heteroaryl, all of which, when substituted, are substituted with one to five substituents each independently selected from the group consisting of alkyl, haloalkyl, cycloalkyl, cycloalkylalkyl, heterocyclyl, heterocyclylalkyl, aryl, aralkyl, heteroaryl, heteroaralkyl, cyano, nitro, halo, pseudohalo, --R.sup.9--OR.sup.10, --R.sup.9--SR.sup.16, --R.sup.9--N(R.sup.11)(R.sup.12), --R.sup.9--C(J)R.sup.13, --R.sup.9--C(J)OR.sup.10, --R.sup.9--C(J)N(R.sup.11)(R.sup.12), --R.sup.9--C(J)N(R.sup.10)N(R.sup.11)(R.sup.12), --R.sup.9--N(R.sup.10)C(J)R.sup.13, --R.sup.9--N(R.sup.10)C(J)OR.sup.10, --R.sup.9--N(R.sup.10)C(J)N(R.sup.11)(R.sup.12), --R.sup.9--OC(J)R.sup.13, --R.sup.9--OC(J)OR.sup.10, --R.sup.9--OC(J)N(R.sup.11(R.sup.12), --Si(R.sup.14).sub.3, --N(R.sup.10)S(O).sub.tR.sup.15 and --R.sup.9--S(O).sub.tR.sup.15; R.sup.2 is optionally substituted alkyl or optionally substituted alkenyl, optionally substituted with one to five substituents each independently selected from the group consisting of cyano, nitro, halo, pseudohalo, --OR.sup.10, --SR.sup.16 and --N(R.sup.11)(R.sup.12), or R.sup.2 is optionally substituted cycloalkyl, optionally substituted cycloalkylalkyl, optionally substituted heterocyclyl, optionally substituted heterocyclylalkyl, optionally substituted aralkyl or optionally substituted heteroaralkyl, optionally substituted with one to five substituents each independently selected from the group consisting of alkyl, haloalkyl, cycloalkyl, cycloalkylalkyl, heterocyclyl, heterocyclylalkyl, aryl, aralkyl, heteroaryl, heteroaralkyl, cyano, nitro, halo, pseudohalo, --R.sup.9--OR.sup.10, --R.sup.9--SR.sup.16, --R.sup.9--N(R.sup.11)(R.sup.12); R.sup.4 is hydrogen or alkyl; R.sup.7 and R.sup.8 together with the nitrogen atom to which they are attached, form an optionally substituted heterocyclyl or an optionally substituted heteroaryl optionally substituted with cyano, nitro, halo, pseudohalo, --OR.sup.10, --SR.sup.16 or --N(R.sup.11(R.sup.12).

14. The compound of claim 13 wherein: R.sup.1 is optionally substituted cycloalkyl, optionally substituted heterocyclyl, optionally substituted aryl or optionally substituted heteroaryl, all of which, when substituted, are substituted with one to five substituents each independently selected from the group consisting of alkyl, haloalkyl, cycloalkyl, cycloalkylalkyl, heterocyclyl, heterocyclylalkyl, aryl, aralkyl, heteroaryl, heteroaralkyl, cyano, nitro, halo, pseudohalo, --R.sup.9--OR.sup.10, --R.sup.9--SR.sup.16, --R.sup.9--N(R.sup.11)(R.sup.12), --R.sup.9--C(J)R.sup.13, --R.sup.9--C(J)OR.sup.10, --R.sup.9--C(J)N(R.sup.11)(R.sup.12), --R.sup.9--C(J)N(R.sup.10)N(R.sup.11)(R.sup.12), --R.sup.9--N(R.sup.10)C(J)R.sup.13, --R.sup.9--N(R.sup.10)C(J)OR.sup.10, --R.sup.9--N(R.sup.10)C(J)N(R.sup.11)(R.sup.12), --R.sup.9--OC(J)R.sup.13, --R.sup.9--OC(J)OR.sup.10, --R.sup.9--OC(J)N(R.sup.11)(R.sup.12), --Si(R.sup.14).sub.3, --N(R.sup.10)S(O).sub.tR.sup.15 and --R.sup.9--S(O).sub.tR.sup.15; R.sup.2 is optionally substituted cycloalkyl, optionally substituted cycloalkylalkyl, optionally substituted heterocyclyl, optionally substituted heterocyclylalkyl, optionally substituted aralkyl or optionally substituted heteroaralkyl, optionally substituted with one to five substituents each independently selected from the group consisting of alkyl, haloalkyl, cycloalkyl, cycloalkylalkyl, heterocyclyl, heterocyclylalkyl, aryl, aralkyl, heteroaryl, heteroaralkyl, cyano, nitro, halo, pseudohalo, --R.sup.9--OR.sup.10, --R.sup.9--SR.sup.16 and --R.sup.9--N(R.sup.11)(R.sup.12).

15. The compound of claim 14 selected from the group consisting of the following: 3-[3-benzyl-5-(2,3-dihydroindol-1-ylmethylene)-4-oxothiazolidin-2-ylidene- amino]-4-ethylamino-benzonitrile; 2-(5-acetyl-2-ethylamino-phenylimino)-3-benzyl-5-(2,3-dihydroindol-1-ylme- thylene)-thiazolidin-4-one; 2-(3-acetylphenylimino)-5-(2,3-dihydroindol-1-ylmethylene)-3-furan-2-ylme- thyl-thiazolidin-4-one; N-{4-[5-(2,3-dihydroindol-1-ylmethylene)-3-furan-2-ylmethyl-4-oxothiazoli- din-2-ylideneamino]-phenyl}-acetamide; and 2-(5-acetyl-2-ethylamino-phenylimino)-3-benzyl-5-(4-methylpiperazin-1-ylm- ethylene)-thiazolidin-4-one.

16. A compound of claim 11 or claim 12 wherein: R.sup.7 and R.sup.8 each independently selected as in (a), (b) or (c) as follows: (a) R.sup.7 and R.sup.8 are each independently optionally substituted alkyl, optionally substituted with cyano, nitro, halo, pseudohalo, --OR.sup.10, --SR.sup.16 or --N(R.sup.11)(R.sup.12); or (b) R.sup.7 and R.sup.8 are each independently optionally substituted aryl, optionally substituted aralkyl, optionally substituted heteroaryl or optionally substituted heteroaralkyl, all of which, when substituted, are substituted with one to five substituents each independently selected from the group consisting of alkyl, haloalkyl, cycloalkyl, cycloalkylalkyl, heterocyclyl, heterocyclylalkyl, aryl, aralkyl, heteroaryl, heteroaralkyl, cyano, nitro, halo, pseudohalo, --R.sup.9--OR.sup.10, --R.sup.9--OR.sup.16OR.sup.10, --R.sup.9--SR.sup.16 and --R.sup.9--N(R.sup.11)(R.sup.12); or (c) one of R.sup.7 and R.sup.8 is hydrogen and the other of R.sup.7 and R.sup.8 is selected as in (a) or (b) above.

17. The compound of claim 16, wherein: R.sup.1 is optionally substituted cycloalkyl, optionally substituted heterocyclyl, optionally substituted aryl or optionally substituted heteroaryl, all of which, when substituted, are substituted with one to five substituents each independently selected from the group consisting of alkyl, haloalkyl, cycloalkyl, cycloalkylalkyl, heterocyclyl, heterocyclylalkyl, aryl, aralkyl, heteroaryl, heteroaralkyl, cyano, nitro, halo, pseudohalo, --R.sup.9--OR.sup.10, --R.sup.9--SR.sup.16, --R.sup.9--N(R.sup.11)(R.sup.12), --R.sup.9--C(J)R.sup.13, --R.sup.9--C(J)OR.sup.10, --R.sup.9--C(J)N(R.sup.11)(R.sup.12), --R.sup.9--C(J)N(R.sup.10)N(R.sup.11)(R.sup.12), --R.sup.9--N(R.sup.10)C(J)R.sup.13, --R.sup.9--N(R.sup.10)C(J)OR.sup.10, --R.sup.9--N(R.sup.10)C(J)N(R.sup.11)(R.sup.12), --R.sup.9--OC(J)R.sup.13, --R.sup.9--OC(J)OR.sup.10, --R.sup.9--OC(J)N(R.sup.11)(R.sup.12), --Si(R.sup.14).sub.3, --N(R.sup.10)S(O).sub.tR.sup.15 and --R.sup.9--S(O).sub.tR.sup.15; and R.sup.2 is optionally substituted cycloalkyl, optionally substituted cycloalkylalkyl, optionally substituted heterocyclyl, optionally substituted heterocyclylalkyl, optionally substituted aralkyl or optionally substituted heteroaralkyl, optionally substituted with one to five substituents each independently selected from the group consisting of alkyl, haloalkyl, cycloalkyl, cycloalkylalkyl, heterocyclyl, heterocyclylalkyl, aryl, aralkyl, heteroaryl, heteroaralkyl, cyano, nitro, halo, pseudohalo, --R.sup.9--OR.sup.10, --R.sup.9--SR.sup.16 and --R.sup.9--N(R.sup.11)(R.sup.12).

18. The compound of claim 17 selected from the group consisting of the following: 3-{3-Benzyl-5-[(N-methyl-phenylamino)-methylene]-4-oxothiazolidin-2-ylide- neamino}-4-ethylamino-benzonitrile; 2-(5-acetyl-2-ethylamino-phenylimino)-3-benzyl-5-[(N-methyl-phenylamino)-- methylene]-thiazolidin-4-one; 3-{3-benzyl-5-[(N-benzyl-methylamino)-methylene]-4-oxothiazolidin-2-ylide- neamino}-4-ethylamino-benzonitrile; 2-(5-acetyl-2-ethylamino-phenylimino)-3-benzyl-5-[(N-benzyl-methylamino)-- methylene]-thiazolidin-4-one; 3-(3-benzyl-5-[[N-(4-methoxyphenyl)-methylamino]methylene}-4-oxothiazolid- in-2-ylideneamino)-4-ethylamino-benzonitrile; 2-(5-acetyl-2-ethylamino-phenylimino)-3-benzyl-5-{[N-(4-methoxyphenyl)-me- thylamino]-methylene}-thiazolidin-4-one; 3-(3-benzyl-5-{[N-(2-methoxyphenyl)-methylamino]-methylene}-4-oxothiazoli- din-2-ylideneamino)-4-ethylamino-benzonitrile; 2-(5-acetyl-2-ethylamino-phenylimino)-3-benzyl-5-{[N-(3-methoxyphenyl)-me- thylamino]-methylene}-thiazolidin-4-one; 2-(5-acetyl-2-ethylamino-phenylimino)-3-benzyl-5-[(N-methyl-phenethylamin- o)-methylene]-thiazolidin-4-one; 2-(5-acetyl-2-ethylamino-phenylimino)-3-benzyl-5-({N-[4-(2-methoxy-ethoxy- )-phenyl]-methylamino}-methylene)-thiazolidin-4-one; 3-{3-benzyl-5-[(4-methoxyphenylamino)-methylene]-4-oxothiazolidin-2-ylide- neamino}-4-ethylamino-benzonitrile; 3-(3-benzyl-5-dimethylaminomethylene-4-oxothiazolidin-2-ylideneamino)-4-e- thylamino-benzonitrile; 2-(5-acetyl-2-ethylamino-phenylimino)-3-benzyl-5-dimethylaminomethylene-t- hiazolidin-4-one; and 2-(5-acetyl-2-ethylamino-phenylimino)-3-benzyl-5-{[(3-dimethylaminopropyl- )-methylamino]-methylene}-thiazolidin-4-one.

19. A pharmaceutical composition, comprising a pharmaceutically acceptable carrier and a compound of formula (I) of claim 1: ##STR00061## or a pharmaceutically acceptable derivative thereof, wherein: X.sup.1 is NR.sup.6, O or S(O).sub.t; X.sup.2 is S or O; R.sup.1 is optionally substituted alkyl, optionally substituted alkenyl or optionally substituted alkynyl, all or which, when substituted, are substituted with one to five substituents each independently selected from the group consisting of cyano, nitro, halo, pseudohalo, --OR.sup.10, --SR.sup.16, --N(R.sup.11)(R.sup.12), --C(J)R.sup.13, --C(J)OR.sup.10, --C(J)N(R.sup.11)(R.sup.12), --C(J)N(R.sup.10)N(R.sup.11)(R.sup.12), --N(R.sup.10)C(J)R.sup.13, --N(R.sup.10)C(J)OR.sup.10, --N(R.sup.10)C(J)N(R.sup.11)(R.sup.12), --OC(J)R.sup.13, --OC(J)OR.sup.10, --OC(J)N(R.sup.11)(R.sup.12), --Si(R.sup.14).sub.3, --N(R.sup.10)S(O).sub.tR.sup.15 and --R.sup.9--S(O).sub.tR.sup.15; or R.sup.1 is optionally substituted cycloalkyl, optionally substituted cycloalkylalkyl, optionally substituted heterocyclyl, optionally substituted heterocyclylalkyl, optionally substituted aryl, optionally substituted aralkyl, optionally substituted heteroaryl or optionally substituted heteroaralkyl, all of which, when substituted, are substituted with one to five substituents each independently selected from the group consisting of alkyl, haloalkyl, cycloalkyl, cycloalkylalkyl, heterocyclyl, heterocyclylalkyl, aryl, aralkyl, heteroaryl, heteroaralkyl, cyano, nitro, halo, pseudohalo, --R.sup.9--OR.sup.10, --R.sup.9--SR.sup.16, --R.sup.9--N(R.sup.11)(R.sup.12), --R.sup.9--C(J)R.sup.13, --R.sup.9--C(J)OR.sup.10, --R.sup.9--C(J)N(R.sup.11)(R.sup.12), --R.sup.9--C(J)N(R.sup.10)N(R.sup.11)(R.sup.12), --R.sup.9--N(R.sup.10)C(J)R.sup.13, --R.sup.9--N(R.sup.10)C(J)OR.sup.10, --R.sup.9--N(R.sup.10)C(J)N(R.sup.11)(R.sup.12), --R.sup.9--OC(J)R.sup.13, --R.sup.9--OC(J)OR.sup.10, --R.sup.9--OC(J)N(R.sup.11)(R.sup.12), --Si(R.sup.14).sub.3, --N(R.sup.10)S(O).sub.tR.sup.15 and --R.sup.9--S(O).sub.tR.sup.15; or R.sup.1 is --R.sup.9--N(R.sup.11)(R.sup.12), --R.sup.9--C(J)R.sup.13, --R.sup.9--C(J)OR.sup.10, --R.sup.9--C(J)N(R.sup.11)(R.sup.12), --R.sup.9--N(R.sup.10)C(J)R.sup.13, --R.sup.9--N(R.sup.10)C(J)OR.sup.10 or --R.sup.9--N(R.sup.10)C(J)N(R.sup.11)(R.sup.12); R.sup.2 is optionally substituted alkyl, optionally substituted alkenyl, optionally substituted alkynyl, all or which, when substituted, are substituted with one to five substituents each independently selected from the group consisting of cyano, nitro, halo, pseudohalo, --OR.sup.10, --SR.sup.16, N(R.sup.11)(R.sup.12), --C(J)R.sup.13, --C(J)OR.sup.10, --C(J)N(R.sup.11)(R.sup.12), --C(J)N(R.sup.10)N(R.sup.11)(R.sup.12), --N(R.sup.10)C(J)R.sup.13, --N(R.sup.10)C(J)OR.sup.10, --N(R.sup.10)C(J)N(R.sup.11)(R.sup.12), --OC(J)R.sup.13, --OC(J)OR.sup.10, --OC(J)N(R.sup.11)(R.sup.12), --Si(R.sup.14).sub.3, --N(R.sup.10)S(O).sub.tR.sup.15 and --S(O).sub.tR.sup.15; or R.sup.2 is optionally substituted cycloalkyl, optionally substituted cycloalkylalkyl, optionally substituted heterocyclyl, optionally substituted heterocyclylalkyl, optionally substituted aryl, optionally substituted heteroaryl, optionally substituted aralkyl, optionally substituted heteroaralkyl or optionally substituted aryl, all of which, when substituted, are substituted with one to five substituents each independently selected from the group consisting of alkyl, haloalkyl, cycloalkyl, cycloalkylalkyl, heterocyclyl, heterocyclylalkyl, aryl, aralkyl, heteroaryl, heteroaralkyl, cyano, nitro, halo, pseudohalo, --R.sup.9--OR.sup.10, --R.sup.9--SR.sup.16, --R.sup.9--N(R.sup.11)(R.sup.12), --R.sup.9--C(J)R.sup.13, --R.sup.9--C(J)OR.sup.10, --R.sup.9--C(J)N(R.sup.11)(R.sup.12), --R.sup.9--C(J)N(R.sup.10)N(R.sup.11)(R.sup.12), --R.sup.9--N(R.sup.10)C(J)R.sup.13, --R.sup.9--N(R.sup.10)C(J)OR.sup.10, --R.sup.9--N(R.sup.10)C(J)N(R.sup.11)(R.sup.12), --R.sup.9--OC(J)R.sup.13, --R.sup.9--OC(J)OR.sup.10, --R.sup.9--OC(J)N(R.sup.11)(R.sup.12), --Si(R.sup.14).sub.3, --N(R.sup.10)S(O).sub.tR.sup.15 and --R.sup.9--S(O).sub.tR.sup.15; or R.sup.2 is --R.sup.9--C(J)R.sup.13, --R.sup.9--C(J)OR.sup.10, --R.sup.9--C(J)N(R.sup.11)(R.sup.12), --R.sup.9--C(J)N(R.sup.10)N(R.sup.11)(R.sup.12), --R.sup.9--N(R.sup.10)C(J)R.sup.13, --R.sup.9--N(R.sup.10)C(J)OR.sup.10, --R.sup.9--N(R.sup.10)C(J)N(R.sup.11)(R.sup.12) or --R.sup.9--S(O).sub.tR.sup.15; R.sup.3, R.sup.4 and R.sup.5 are each independently selected as in (a), (b) or (c) as follows: (a) R.sup.3, R.sup.4 and R.sup.5 are each independently optionally substituted alkyl, optionally substituted alkenyl or optionally substituted alkynyl, all of which, when substituted are substituted with cyano, nitro, halo, pseudohalo, --OR.sup.10, --SR.sup.16, --N(R.sup.11)(R.sup.12), --C(J)R.sup.13, --C(J)OR.sup.10, --C(J)N(R.sup.11)(R.sup.12), --C(J)N(R.sup.10)N(R.sup.11)(R.sup.12), --N(R.sup.10)C(J)R.sup.13, --N(R.sup.10)C(J)OR.sup.10, --N(R.sup.10)C(J)N(R.sup.11)(R.sup.12), --OC(J)R.sup.13, --OC(J)OR.sup.10, --OC(J)N(R.sup.11)(R.sup.12), --Si(R.sup.14).sub.3, --N(R.sup.10)S(O).sub.tR.sup.15 and --S(O).sub.tR.sup.15; or (b) R.sup.3, R.sup.4 and R.sup.5 are each independently optionally substituted cycloalkyl, optionally substituted cycloalkylalkyl, optionally substituted heterocyclyl, optionally substituted heterocyclylalkyl, optionally substituted aryl, optionally substituted aralkyl, optionally substituted heteroaryl, or optionally substituted heteroaralkyl, all of which, when substituted, are substituted with one to five substituents each independently selected from the group consisting of alkyl, haloalkyl, cycloalkyl, cycloalkylalkyl, heterocyclyl, heterocyclylalkyl, aryl, aralkyl, heteroaryl, heteroaralkyl, cyano, nitro, halo, pseudohalo, --R.sup.9--OR.sup.10, --R.sup.9--SR.sup.16, --R.sup.9--N(R.sup.11)(R.sup.12), --R.sup.9--C(J)R.sup.13, --R.sup.9--C(J)OR.sup.10, --R.sup.9--C(J)N(R.sup.11)(R.sup.12), --R.sup.9--N(R.sup.10)C(J)R.sup.13, --R.sup.9--N(R.sup.10)C(J)OR.sup.10, --R.sup.9--N(R.sup.10)C(J)N(R.sup.11)(R.sup.12), --R.sup.9--OC(J)R.sup.13, --R.sup.9--OC(J)OR.sup.10, --R.sup.9--OC(J)N(R.sup.11)(R.sup.12), --Si(R.sup.14).sub.3, --N(R.sup.10)S(O).sub.tR.sup.15 and --R.sup.9--S(O).sub.tR.sup.15; or (c) R.sup.3, R.sup.4 and R.sup.5 are each independently selected from a group consisting of hydrogen, --N(R.sup.7)(R.sup.8), --N(R.sup.10)C(J)R.sup.13, --N(R.sup.10)C(J)OR.sup.10, --R.sup.9--C(J)R.sup.13, --N(R.sup.10)C(J)N(R.sup.11)(R.sup.12) and --N(R.sup.10)S(O).sub.tR.sup.15; provided that R.sup.5 is present only when bond a is a single bond; and further provided that: when R.sup.3, R.sup.4 or R.sup.5 is cycloalkylalkyl or --N(R.sup.7)(R.sup.8) and bond a is a single bond, then R.sup.1 is phenyl substituted with at least two different substituents selected from the following: cyano, --R.sup.9--C(J)R.sup.13, --R.sup.9--C(J)OR.sup.10, --R.sup.9--C(J)N(R.sup.11)(R.sup.12), --R.sup.9--C(J)N(R.sup.10)N(R.sup.12)R.sup.13, --R.sup.9--N(R.sup.10)C(J)OR.sup.10, --R.sup.9--N(R.sup.10)C(J)N(R.sup.11)(R.sup.12), --N(R.sup.10)S(O).sub.tR.sup.13, --R.sup.9--N(R.sup.10)C(J)R.sup.13, and --R.sup.9--N(R.sup.11)(R.sup.12); or when R.sup.3, R.sup.4 or R.sup.5 is alkyl, alkenyl, alkynyl, halo, haloalkyl, cycloalkyl, heterocyclylalkyl, aralkyl, --R.sup.9--C(J)R.sup.13, --R.sup.9--C(J)OR.sup.10, --R.sup.9--S(O).sub.tR.sup.15, aryl or heteroaryl, then R.sup.1 is phenyl and R.sup.1 is substituted with at least two different substituents selected from the following: cyano, --R.sup.9--C(J)R.sup.13, --R.sup.9--C(J)OR.sup.10, --R.sup.9--C(J)N(R.sup.11)(R.sup.12), --R.sup.9--C(J)N(R.sup.10)N(R.sup.12)R.sup.13, --R.sup.9--N(R.sup.10)C(J)OR.sup.10, --R.sup.9--N(R.sup.10)C(J)N(R.sup.11)(R.sup.12), --N(R.sup.10)S(O).sub.tR.sup.13, --R.sup.9--N(R.sup.10)C(J)R.sup.13, and --R.sup.9--N(R.sup.11)(R.sup.12); and further provided that R.sup.3, R.sup.4 and R.sup.5 are not all hydrogen; R.sup.6 is hydrogen, alkyl, alkenyl, alkynyl, aryl, heteroaryl, cycloalkyl, heterocyclyl, aralkyl, heteroaralkyl, --R.sup.9--S(O).sub.tR.sup.15, --R.sup.9--C(J)R.sup.13, --R.sup.9--C(J)OR.sup.10 or --R.sup.9--C(J)N(R.sup.11)(R.sup.12); R.sup.7 and R.sup.8 each independently selected as in (a), (b) or (c) as follows: (a) R.sup.7 and R.sup.8 are each independently optionally substituted alkyl, optionally substituted alkenyl or optionally substituted alkynyl, all of which, when substituted, are substituted with one to three substituents each independently selected from the group consisting of cyano, nitro, halo, pseudohalo, --OR.sup.10, --SR.sup.16, --N(R.sup.11)(R.sup.12), --OR.sup.16OR.sup.10, --C(J)R.sup.13, --C(J)OR.sup.10, --C(J)N(R.sup.11)(R.sup.12), --C(J)N(R.sup.10)N(R.sup.11)(R.sup.12), --N(R.sup.10)C(J)R.sup.13, --N(R.sup.10)C(J)OR.sup.10, --N(R.sup.10)C(J)N(R.sup.11)(R.sup.12), --OC(J)R.sup.13, --OC(J)OR.sup.10, --OC(J)N(R.sup.11)(R.sup.12), --Si(R.sup.14).sub.3, --N(R.sup.10)S(O).sub.tR.sup.15 and --S(O).sub.tR.sup.15; or (b) R.sup.7 and R.sup.8 are are each independently optionally substituted cycloalkyl, optionally substituted cycloalkylalkyl, optionally substituted heterocyclyl, optionally substituted heterocyclylalkyl, optionally substituted aryl, optionally substituted aralkyl, optionally substituted heteroaryl or optionally substituted heteroaralkyl, all of which, when substituted, are substituted with one to five substituents each independently selected from the group consisting of alkyl, haloalkyl, cycloalkyl, cycloalkylalkyl, heterocyclyl, heterocyclylalkyl, aryl, aralkyl, heteroaryl, heteroaralkyl, cyano, nitro, halo, pseudohalo, --R.sup.9--OR.sup.10, --R.sup.9--OR.sup.16OR.sup.10, --R.sup.9--SR.sup.16, --R.sup.9--N(R.sup.11)(R.sup.12), --R.sup.9--C(J)R.sup.13, --R.sup.9--C(J)OR.sup.10, --R.sup.9--C(J)N(R.sup.11)(R.sup.12), --R.sup.9--N(R.sup.10)C(J)R.sup.13, --R.sup.9--N(R.sup.10)C(J)OR.sup.10, --R.sup.9--N(R.sup.10)C(J)N(R.sup.11)(R.sup.12), --R.sup.9--C(J)N(R.sup.10)N(R.sup.11)(R.sup.12), --R.sup.9--OC(J)R.sup.13, --R.sup.9--OC(J)OR.sup.10, --R.sup.9--OC(J)N(R.sup.11)(R.sup.12), --Si(R.sup.14).sub.3, --N(R.sup.10)S(O).sub.tR.sup.15 and --R.sup.9--S(O).sub.tR.sup.15; or (c) R.sup.7 and R.sup.8 are each independently hydrogen, --C(J)R.sup.13, --C(J)OR.sup.10, --C(J)N(R.sup.11)(R.sup.12), --N(R.sup.10)C(J)OR.sup.10 or --S(O).sub.tR.sup.15 provided, however, that both R.sup.7 and R.sup.8 cannot be hydrogen; or R.sup.7 and R.sup.8 together with the nitrogen atom to which they are attached, form an optionally substituted heterocyclyl or an optionally substituted heteroaryl, either of which, when substituted, are substituted with one to five substituents each independently selected from the group consisting of alkyl, haloalkyl, cycloalkyl, cycloalkylalkyl, heterocyclyl, heterocyclylalkyl, aryl, aralkyl, heteroaryl, heteroaralkyl, cyano, nitro, halo, pseudohalo, --R.sup.9--OR.sup.10, --R.sup.9--OR.sup.16OR.sup.10, --R.sup.9--SR.sup.16, --R.sup.9--N(R.sup.11)(R.sup.12), --R.sup.9--C(J)R.sup.13, --R.sup.9--C(J)OR.sup.10, --R.sup.9--C(J)N(R.sup.11)(R.sup.12), --R.sup.9--C(J)N(R.sup.10)N(R.sup.11)(R.sup.12), --R.sup.9--N(R.sup.10)C(J)R.sup.13, --R.sup.9--N(R.sup.10)C(J)OR.sup.10, --R.sup.9--N(R.sup.10)C(J)N(R.sup.11)(R.sup.12), --R.sup.9--OC(J)R.sup.13, --R.sup.9--OC(J)OR.sup.10, --R.sup.9--OC(J)N(R.sup.11)(R.sup.12), --Si(R.sup.14).sub.3, --N(R.sup.10)S(O).sub.tR.sup.15 and --S(O).sub.tR.sup.15; each R.sup.9 is independently a direct bond or a straight or branched alkylene chain; R.sup.10 and R.sup.13 are each independently hydrogen, alkyl, alkenyl, alkynyl, haloalkyl, cycloalkyl, cycloalkylalkyl, heterocyclyl, heterocyclylalkyl, aryl, aralkyl, heteroaryl or heteroaralkyl; R.sup.11 and R.sup.12 are each independently hydrogen, alkyl, alkenyl, alkynyl, haloalkyl, cycloalkyl, cycloalkylalkyl, heterocyclyl, heterocyclylalkyl, aryl, aralkyl, heteroaryl or heteroaralkyl; or R.sup.11 and R.sup.12 together with the nitrogen atom to which they are attached, form a heterocyclyl, heterocyclylalkenyl, or heteroaryl; R.sup.14, R.sup.15 and R.sup.16 are each independently alkyl, alkenyl, alkynyl, haloalkyl, cycloalkyl, cycloalkylalkyl, heterocyclyl, heterocyclylalkyl, aryl, aralkyl, heteroaryl or heteroaralkyl; each J is independently O or S; and each t is independently 0 to 2.

20. The pharmaceutical composition of claim 19 wherein the pharmaceutical composition further comprises at least one additional active agent(s) selected from antihyperlipidemic agents, plasma HDL-raising agents, antihypercholesterolemic agents, cholesterol biosynthesis inhibitors, HMG CoA reductase inhibitors, acyl-coenzyme A cholesterol acytransferase (ACAT) inhibitors, probucol, raloxifene, nicotinic acid, niacinamide, cholesterol absorption inhibitors, bile acid sequestrants, low density lipoprotein receptor inducers, clofibrate, fenofibrate, benzofibrate, cipofibrate, gemfibrizol, vitamin B.sub.6, vitamin B.sub.12, vitamin C, vitamin E, .beta.-blockers, anti-diabetes agents, sulfonylureas, biguanides, thiazolidinediones, activators of PPAR.alpha., PPAR.beta., and PPAR.gamma., dehydroepiandrosterone, antiglucocorticoids, TNF.alpha. inhibitors, .alpha.-glucosidase inhibitors, pramlintide, amylin, insulin, angiotensin II antagonists, angiotensin converting enzyme inhibitors, platelet aggregation inhibitors, fibrinogen receptor antagonists, LXR .alpha. agonists, antagonists or partial agonists, LXR .beta. agonists, antagonists or partial agonists, phenylpropanolamine, phentermine, diethylpropion, mazindol, fenfluramine, dexfenfluramine, phentiramine, .beta..sub.3 adrenoceptor agonist agents, sibutramine, gastrointestinal lipase inhibitors, neuropeptide Y, enterostatin, cholecytokinin, bombesin, amylin, histamine H.sub.3 receptor agonists or antagonists, dopamine D.sub.2 receptor agonists or antagonists, melanocyte stimulating hormone, corticotrophin releasing factor, leptins, galanin or gamma amino butyric acid (GABA), aspirin or fibric acid derivatives.

21. A compound or pharmaceutically acceptable derivative of claim 1, selected from the group consisting of 4-(ethylamino)-3-{[(2Z,5Z)-5-{[methyl(phenyl)amino]methylidene}-4-oxo-3-(- phenylmethyl)-1,3-thiazolidin-2-ylidene]amino}benzonitrile; (2Z,5Z)-2-{[5-acetyl-2-(ethylamino)phenyl]imino}-5-{[methyl(phenyl)amino]- methylidene}-3-(phenylmethyl)-1,3-thiazolidin-4-one; 4-(ethylamino)-3-{[(2Z,5Z)-5-{[methyl(phenylmethyl)amino]methylidene}-4-o- xo-3-(phenylmethyl)-1,3-thiazolidin-2-ylidene]amino}benzonitrile; (2Z,5Z)-2-{[5-acetyl-2-(ethylamino)phenyl]imino}-5-{[methyl(phenylmethyl)- amino]methylidene}-3-(phenylmethyl)-1,3-thiazolidin-4-one; 3-{[(2Z,5Z)-5-(2,3-dihydro-1H-indol-1-ylmethylidene)-4-oxo-3-(phenylmethy- l)-1,3-thiazolidin-2-ylidene]amino}-4-(ethylamino)benzonitrile; (2Z,5Z)-2-{[5-acetyl-2-(ethylamino)phenyl]imino}-5-(2,3-dihydro-1H-indol-- 1-ylmethylidene)-3-(phenylmethyl)-1,3-thiazolidin-4-one; (2Z,5Z)-2-[(3-acetylphenyl)imino]-5-(2,3-dihydro-1H-indol-1-ylmethylidene- )-3-(furan-2-ylmethyl)-1,3-thiazolidin-4-one; N-(4-{[(2Z,5Z)-5-(2,3-dihydro-1H-indol-1-ylmethylidene)-3-(furan-2-ylmeth- yl)-4-oxo-1,3-thiazolidin-2-ylidene]amino}phenyl)acetamide; 3-{[(2Z,5Z)-5-[(dimethylamino)methylidene]-4-oxo-3-(phenylmethyl)-1,3-thi- azolidin-2-ylidene]amino}-4-(ethylamino)benzonitrile; (2Z,5Z)-2-{[5-acetyl-2-(ethylamino)phenyl]imino}-5-[(dimethylamino)methyl- idene]-3-(phenylmethyl)-1,3-thiazolidin-4-one; 4-(ethylamino)-3-{[(2Z,5Z)-5-({[4-(methyloxy)phenyl]amino}methylidene)-4-- oxo-3-(phenylmethyl)-1,3-thiazolidin-2-ylidene]amino}benzonitrile; 4-(ethylamino)-3-{[(2Z,5Z)-5-({methyl[4-(methyloxy)phenyl]amino}methylide- ne)-4-oxo-3-(phenylmethyl)-1,3-thiazolidin-2-ylidene]amino}benzonitrile; (2Z,5Z)-2-{[5-acetyl-2-(ethylamino)phenyl]imino}-5-({methyl[4-(methyloxy)- phenyl]amino}methylidene)-3-(phenylmethyl)-1,3-thiazolidin-4-one; 4-(ethylamino)-3-{[(2Z,5Z)-5-({methyl[2-(methyloxy)phenyl]amino}methylide- ne)-4-oxo-3-(phenylmethyl)-1,3-thiazolidin-2-ylidene]amino}benzonitrile; (2Z,5Z)-2-{[5-acetyl-2-(ethylamino)phenyl]imino}-5-({methyl[3-(methyloxy)- phenyl]amino}methylidene)-3-(phenylmethyl)-1,3-thiazolidin-4-one; (2Z,5Z)-2-{[5-acetyl-2-(ethylamino)phenyl]imino}-5-{[methyl(4-{[2-(methyl- oxy)ethyl]oxy}phenyl)amino]methylidene}-3-(phenylmethyl)-1,3-thiazolidin-4- -one; (2Z,5Z)-2-{[5-acetyl-2-(ethylamino)phenyl]imino}-5-[(4-methylpiperaz- in-1-yl)methylidene]-3-(phenylmethyl)-1,3-thiazolidin-4-one; (2Z,5Z)-2-{[5-acetyl-2-(ethylamino)phenyl]imino}-5-({[3-dimethylamino)pro- pyl](methyl)amino}methylidene)-3-(phenylmethyl)-1,3-thiazolidin-4-one; (2Z,5Z)-2-{[5-acetyl-2-(ethylamino)phenyl]imino}-5-{[methyl(2-phenylethyl- )amino]methylidene}-3-(phenylmethyl)-1,3-thiazolidin-4-one; (2Z)-2-{[5-acetyl-2-(ethylamino)phenyl]imino}-3,5-bis(phenylmethyl)-1,3-t- hiazolidin-4-one; (2Z)-2-{[5-acetyl-2-(ethylamino)phenyl]imino}-5-(2-phenylethyl)-3-(phenyl- methyl)-1,3-thiazolidin-4-one; (2Z)-2-{[5-acetyl-2-(ethylamino)phenyl]imino}-5-(2-oxo-2-phenylethyl)-3-(- phenylmethyl)-1,3-thiazolidin-4-one; (2Z,5Z)-2-{[5-acetyl-2-(ethylamino)phenyl]imino}-3-(phenylmethyl)-5-(phen- ylmethylidene)-1,3-thiazolidin-4-one; and (2Z,5Z)-2-{[5-acetyl-2-(ethylamino)phenyl]imino}-5-(furan-2-ylmethylidene- )-3-(phenylmethyl)-1,3-thiazolidin-4-one.

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