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Details for Patent: 5,698,584

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Details for Patent: 5,698,584

Title: 3,4-diaryl-2-hydroxy-2,5-dihydrofurans as prodrugs to COX-2 inhibitors
Abstract:The invention encompasses the novel compound of Formula I useful in the treatment of cyclooxygenase-2 mediated diseases. ##STR1## The invention also encompasses certain pharmaceutical compositions for treatment of cyclooxygenase-2 mediated diseases comprising compounds of Formula I.
Inventor(s): Black; Cameron (Pointe Claire, CA), Leger; Serge (Dollard des Ormeaux, CA), Prasit; Petpiboon (Kirkland, CA), Wang; Zhaoyin (Pierrefonds, CA), Hamel; Pierre (Laval, CA), Han; Yongxin (Kirkland, CA), Hughes; Gregory (Bridgewater, CA)
Assignee: Merck Frosst Canada, Inc. (Kirkland, CA)
Filing Date:Oct 25, 1996
Application Number:08/738,143
Claims:1. A compound of Formula I ##STR65## or a pharmaceutically acceptable salt thereof wherein: R.sup.1 is selected from the group consisting of

(a) S(O).sub.2 CH.sub.3,

(b) S(O).sub.2 NHR.sup.8,

(c) S(O).sub.2 NHC(O)CF.sub.3,

(d) S(O)(NH)NH.sub.2,

(e) S(O)(NH)NHC(O)CF.sub.3,

(f) P(O)(CH.sub.3)NH.sub.2,

(g) P(O)(CH.sub.3).sub.2, and

(h) C(S)NH.sub.2 ;

R.sup.2 is selected from the group consisting of

(a) NR.sup.10 R.sup.11,

(b) SR.sup.11,

(c) OR.sup.11,

(d) R.sup.11,

(e) C1-10alkenyl,

(f) C1-10alkynyl,

(g) unsubstituted, mono-, di-, tri- or tetra-substituted C.sub.3 -C.sub.10 cycloalkenyl wherein the substituents are independently selected from the group consisting of

(1) halo,

(2) C.sub.1-6 alkoxy,

(3) C.sub.1-6 alkylthio,

(4) CN,

(5) CF.sub.3,

(6) C.sub.1-10 alkyl,

(7) N.sub.3,

(8) --CO.sub.2 H,

(9) --CO.sub.2 --C.sub.1-10 alkyl,

(10) --C(R.sup.12)(R.sup.13)--OH,

(11) --C(R.sup.12)(R.sup.13)--O--C.sub.1-4 alkyl,

(12) --C.sub.1-10 alkyl-CO.sub.2 --R.sup.12 ;

(13) benzyloxy,

(14) --O--(C.sub.1-10 alkyl)-CO.sub.2 R.sup.12, and

(15) --O--(C.sub.1-10 alkyl)-NR.sup.12 R.sup.13 ;

(h) a mono-, di-, tri- or tetra-substituted heterocycloalkyl group of 5, 6 or 7 members or a benzoheterocycle wherein said heterocycloalkyl or benzoheterocycle contains 1 or 2 heteroatoms selected from O, S, or N and optionally contains a carbonyl group or a sulfonyl group, and wherein said substituents are independently selected from the group consisting of

(1) halo,

(2) C.sub.1-10 alkyl,

(3) C.sub.1-10 alkoxy,

(4) C.sub.1-10 alkylthio,

(5) CN,

(6) CF.sub.3,

(7) N.sub.3,

(8) --C(R.sup.12)(R.sup.13)--OH, and

(9) --C(R.sup.12)(R.sup.13)--O--C.sub.1-10 alkyl;

(i) styryl or mono or di-substituted styryl wherein the substituent are independently selected from the group consisting of

(1) halo,

(2) C.sub.1-6 alkoxy,

(3) C.sub.1-6 alkylthio,

(4) CN,

(5) CF.sub.3,

(6) C.sub.1-10 alkyl,

(7) N.sub.3,

(8) --CO.sub.2 H,

(9) --CO.sub.2 --C.sub.1-10 alkyl,

(10) --C(R.sup.12)(R.sup.13)--OH,

(11) --C(R.sup.12)(R.sup.13)--O--C.sub.1-4 alkyl,

(12) --C.sub.1-10 alkyl-CO.sub.2 --R.sup.12 ;

(13) benzyloxy,

(14) --O--(C.sub.1-10 alkyl)-CO.sub.2 R.sup.12, and

(15) --O--(C.sub.1-10 alkyl)-NR.sup.12 R.sup.13 ;

(j) phenylacetylene or mono- or di-substituted phenylacetylene wherein the substituents are independently selected from the group consisting of

(1) halo,

(2) C.sub.1-6 alkoxy,

(3) C.sub.1-6 alkylthio,

(4) CN,

(5) CF.sub.3,

(6) C.sub.1-10 alkyl,

(7) N.sub.3,

(8) --CO.sub.2 H,

(9) --CO.sub.2 --C.sub.1-10 alkyl,

(10) --C(R.sup.12)(R.sup.13)--OH,

(11) --C(R.sup.12)(R.sup.13)--O--C.sub.1-4 alkyl,

(12) --C.sub.1-10 alkyl-CO.sub.2 --R.sup.12,

(13) benzyloxy,

(14) --O--(C.sub.1-10 alkyl)-CO.sub.2 R.sup.12,

(15) --O--(C.sub.1-10 alkyl)-NR.sup.12 R.sup.13,

(k) C.sub.1-10 fluoroalkenyl, and

(l) mono- or di-substituted bicyclic heteroaryl of 8, 9 or 10 members, containing 2, 3, 4 or 5 heteroatoms, wherein at least one heteroatom resides on each ring of said bicyclic heteroaryl, said heteroatoms independently selected from O, S and N and said substituents are independently selected from the group consisting of

(1) hydrogen,

(2) halo,

(3) C.sub.1-10 alkyl,

(4) C.sub.1-10 alkoxy,

(5) C.sub.1-6 alkylthio,

(6) CN,

(7) C.sub.1-6 fluoroalkyl, including CF.sub.3,

(8) N.sub.3,

(9) --C(R.sup.5)(R.sup.6)--OH,

(10) --C(R.sup.5)(R.sup.6)--O--C.sub.1-10 alkyl;

R.sup.3 is hydrogen, C.sub.1-10 alkyl, CH.sub.2 OR.sup.8, CN, CH.sub.2 CN, or C.sub.1-6 fluoroalkyl, F, CONR.sup.8.sub.2, unsubstituted or mono- or di-substituted phenyl, unsubstituted or mono or di-substituted benzyl, unsubstituted or mono- or di-substituted heteroaryl, unsubstituted or mono or di-substituted heteroarylmethyl, wherein the substituents are independently selected from the group consisting of

(1) halo,

(2) C.sub.1-10 alkyl,

(3) C.sub.1-10 alkoxy,

(4) C.sub.1-10 alkylthio,

(5) CN,

(6) CF.sub.3,

(7) N.sub.3,

(8) --C(R.sup.12)(R.sup.13)--OH, and

(9) --C(R.sup.12)(R.sup.13)--O--C.sub.1-10 alkyl;

R.sup.4 is

(a) hydrogen,

(b) C.sub.1-10 alkyl,

(c) C.sub.1-10 alkoxy,

(d) C.sub.1-10 alkylthio,

(e) --OH,

(f) --OCOR.sup.8,

(g) --SH,

(h) --SCOR.sup.8,

(i) --OCO.sub.2 R.sup.9,

(j) --SCO.sub.2 R.sup.9,

(k) OCONR.sup.8.sub.2,

(l) SCONR.sup.8.sub.2 ;

(m) C.sub.3-10 cycloalkoxy, and

(n) C.sub.3-10 cycloalkylthio,

or R.sup.3 and R.sup.4 together with the carbon to which they are attached form a monocyclic ring of 3, 4, 5, 6, or 7 members which ring optionally contains one or two heteroatoms selected from O, S or N;

R.sup.5 is selected from the group consisting of

(a) OR.sup.17,

(b) SR.sup.18,

(c) NR.sup.17 R.sup.18,

(d) NHS(O).sub.2 R.sup.18,

(e) S(O)R.sup.18,

(f) S(O).sub.2 R.sup.18,

(g) S(O).sub.2 NR.sup.17.sub.2,

(h) OP(O)(OR.sup.16).sub.2 ;

each R.sup.8 is independently selected from the group consisting of

(a) hydrogen and

(b) R.sup.9 ;

each R.sup.9 is independently selected from the group consisting of

(a) C.sub.1-10 alkyl,

(b) --C.sub.1-10 alkyl-CO.sub.2 H

(c) C.sub.1-10 alkyl-NH.sub.2

(d) phenyl or mono-, di- or tri-substituted phenyl wherein the substituents are independently selected from halo, C.sub.1-10 alkyl, C.sub.1-10 alkoxy, C.sub.1-10 alkylthio, C.sub.1-10 alklyCO.sub.2 H, C.sub.1-10 alkylNH.sub.2, CN, CO.sub.2 H and CF.sub.3,

(e) benzyl or mono-, di- or tri-substituted benzyl wherein the substituents are independently selected from halo, C.sub.1-10 alkyl, C.sub.1-10 alkoxy, C.sub.1-10 alkylthio, C.sub.1-10 alkylCO.sub.2 H, C.sub.1-10 alkylNH.sub.2, CN, CO.sub.2 H and CF.sub.3,

(f) C.sub.3-10 cycloalkyl,

(g) C.sub.1-10 alkanoyl, and

(h) benzoyl or mono-, di-, or trisubstituted benzoyl wherein the substituents are independently selected from halo, C.sub.1-10 alkyl, C.sub.1-10 alkoxy, C.sub.1-10 alkylthio, C.sub.1-10 alkylCO.sub.2 H, --C.sub.1-10 alkylNH.sub.2, CN, CO.sub.2 H and CF.sub.3,

each R.sup.10 is independently selected from the group consisting of

(a) hydrogen and

(b) R.sup.11 ;

R.sup.11 is selected from the group consisting of

(a) C.sub.1-10 alkyl,

(b) C.sub.3-10 cycloalkyl,

(c) unsubstituted, mono-, di- or tri-substituted phenyl or naphthyl wherein the substituents are independently selected from the group consisting of

(1) halo,

(2) C.sub.1-10 alkoxy,

(3) C.sub.1-10 alkylthio,

(4) CN,

(5) CF.sub.3,

(6) C.sub.1-10 alkyl,

(7) N.sub.3,

(8) --CO.sub.2 H,

(9) --CO.sub.2 --C.sub.1-10 alkyl,

(10) --C(R.sup.12)(R.sup.13)--OH,

(11) --C(R.sup.12)(R.sup.13)--O--C.sub.1-4 alkyl,

(12) --C.sub.1-6 alkyl-CO.sub.2 --R.sup.12,

(13) benzyloxy,

(14) --O--(C.sub.1-10 alkyl)-CO.sub.2 R.sup.12, and

(15) --O--(C.sub.1-10 alkyl)-NR.sup.12 R.sup.13,

(d) unsubstituted, mono-, di- or tri-substituted heteroaryl wherein the heteroaryl is a monocyclic aromatic ring of 5 atoms, said ring having one hetero atom which is S, O, or N, and optionally 1, 2, or 3 additional N atoms; or said heteroaryl is a monocyclic ring of 6 atoms, said ring having one hetero atom which is N, and optionally 1, 2, or 3 additional N atoms, and wherein said substituents are independently selected from the group consisting of

(1) halo,

(2) C.sub.1-10 alkyl,

(3) C.sub.1-10 alkoxy,

(4) C.sub.1-10 alkylthio,

(5) CN,

(6) CF.sub.3,

(7) N.sub.3,

(8) --C(R.sup.12)(R.sup.13)--OH, and

(9) --C(R.sup.12)(R.sup.13)--O--C.sub.1-10 alkyl;

(e) unsubstituted, mono- or di-substituted benzoheterocycle in which the benzoheterocycle is a 5, 6, or 7-membered ring which contains 1 or 2 heteroatoms independently selected from O, S, or N and optionally a carbonyl group or a sulfonyl group, wherein said substituents are selected from the group consisting of

(1) halo,

(2) C.sub.1-10 alkyl,

(3) C.sub.1-10 alkoxy,

(4) C.sub.1-10 alkylthio,

(5) CN,

(6) CF.sub.3,

(7) N.sub.3,

(8) --C(R.sup.12)(R.sup.13)--OH, and

(9) --C(R.sup.12)(R.sup.13)--O--C.sub.1-10 alkyl;

(f) unsubstituted, mono- or di-substituted benzocarbocycle in which the carbocycle is a 5, 6, or 7-membered ring which optionally contains a carbonyl group, wherein said substituents are independently selected from the group consisting of

(1) halo,

(2) C.sub.1-10 alkyl,

(3) C.sub.1-10 alkoxy,

(4) C.sub.1-10 alkylthio,

(5) CN,

(6) CF.sub.3,

(7) N.sub.3,

(8) --C(R.sup.12)(R.sup.13)--OH, and

(9) --C(R.sup.12)(R.sup.13)--O--C.sub.1-10 alkyl;

each R.sup.12 or R.sup.13 is independently selected from the group consisting of

(a) hydrogen, and

(b) C.sub.1-10 alkyl,

or R.sup.12 and R.sup.13 together with the atom to which they are attached form a saturated monocyclic ring of 3, 4, 5, 6 or 7 atoms;

each R.sup.16 is independently selected from the group consisting of hydrogen, C.sub.1-6 alkyl and unsubstituted or mono- or disubstituted benzyl, wherein the substituents are selected from halo, CN, C.sub.1-6 alkyl, C.sub.1-6 alkoxy, C.sub.1-6 alkylthio or C.sub.1-6 fluoroalkyl;

each R.sup.17 is independently selected from the group consisting of

(a) hydrogen and

(b) R.sup.18 ; and

each R.sup.18 is independently selected from the group consisting of

(a) C.sub.1-10 alkyl,

(b) --C.sub.1-10 alkyl-CO.sub.2 H

(c) C.sub.1-10 alkyl-NH.sub.2

(d) phenyl or mono-, di- or tri-substituted phenyl wherein the substituents are independently selected from halo, C.sub.1-10 alkyl, C.sub.1-10 alkoxy, C.sub.1-10 alkylthio, C.sub.1-10 alklyCO.sub.2 H, C.sub.1-10 alkylNH.sub.2, CN, CO.sub.2 H and CF.sub.3,

(e) benzyl or mono-, di- or tri-substituted benzyl wherein the substituents are independently selected from halo, C.sub.1-10 alkyl, C.sub.1-10 alkoxy, C.sub.1-10 alkylthio, C.sub.1-10 alkylCO.sub.2 H, C.sub.1-10 alkylNH.sub.2, CN, CO.sub.2 H and CF.sub.3,

(f) C.sub.3-10 cycloalkyl,

(g) H-(oxyethyl)n wherein n is 1 to 6,

(h) C.sub.1-10 alkanoyl, and

(i) benzoyl or mono-, di-, or trisubstituted benzoyl wherein the substituents are independently selected from halo, C.sub.1-10 alkyl, C.sub.1-10 alkoxy, C.sub.1-10 alkylthio, C.sub.1-10 alkylCO.sub.2 H, --C.sub.1-10 alkylNH.sub.2, CN, CO.sub.2 H and CF.sub.3.

2. A compound according to claim 1 wherein

R.sup.5 is selected from the group consisting of

(a) OR.sup.17,

(b) SR.sup.18, and

(c) NHS(O).sub.2 R.sup.18.

3. A compound according to claim 1 wherein:

R.sup.1 is selected from the group consisting of

(a) S(O).sub.2 CH.sub.3,

(b) S(O).sub.2 NHR.sup.8,

(c) S(O).sub.2 NHC(O)CF.sub.3, and

(d) S(O)(NH)NH.sub.2 ;

R.sup.2 is selected from the group consisting of

(a) SR.sup.11,

(b) OR.sup.11,

(c) R.sup.11,

(d) unsubstituted, mono-, di-, tri- or tetra-substituted C.sub.3-6 cycloalkenyl wherein the substituents are independently selected from the group consisting of

(1) halo,

(2) C.sub.1-6 alkoxy,

(3) C.sub.1-6 alkylthio,

(4) CN,

(5) CF.sub.3,

(6) C.sub.1-10 alkyl,

(7) N.sub.3,

(8) --CO.sub.2 H,

(9) --CO.sub.2 --C.sub.1-6 alkyl,

(10) --C(R.sup.12)(R.sup.13)--OH,

(11) --C(R.sup.12)(R.sup.13)--O--C.sub.1-4 alkyl,

(12) --C.sub.1-6 alkyl-CO.sub.2 --R.sup.12 ;

(13) benzyloxy,

(14) --O--(C.sub.1-10 alkyl)-CO.sub.2 R.sup.12, and

(15) --O--(C.sub.1-10 alkyl)-NR.sup.12 R.sup.13 ;

(e) a mono-, di-, tri- or tetra-substituted heterocycloalkyl group of 5, 6 or 7 members or a benzoheterocycle wherein said heterocycloalkyl or benzoheterocycle contains 1 or 2 heteroatoms selected from O, S, or N and optionally contains a carbonyl group or a sulfonyl group, and wherein said substituents are independently selected from the group consisting of

(1) halo,

(2) C.sub.1-6 alkyl,

(3) C.sub.1-6 alkoxy,

(4) C.sub.1-6 alkylthio,

(5) CN,

(6) CF.sub.3,

(7) N.sub.3,

(8) --C(R.sup.12)(R.sup.13)--OH, and

(9) --C(R.sup.12)(R.sup.13)--O--C.sub.1-6 alkyl;

(f) phenylacetylene or mono- or di-substituted phenylacetylene wherein the substituents are independently selected from the group consisting of

(1) halo,

(2) C.sub.1-6 alkoxy,

(3) C.sub.1-6 alkylthio,

(4) CN,

(5) CF.sub.3,

(6) C.sub.1-6 alkyl,

(7) N.sub.3,

(8) --CO.sub.2 H,

(9) --CO.sub.2 --C.sub.1-6 alkyl,

(10) --C(R.sup.12)(R.sup.13)--OH,

(11) --C(R.sup.12)(R.sup.13)--O--C.sub.1-4 alkyl,

(12) --C.sub.1-6 alkyl-CO.sub.2 --R.sup.12,

(13) benzyloxy,

(14) --O--(C.sub.1-6 alkyl)-CO.sub.2 R.sup.12,

(15) --O--(C.sub.1-6 alkyl)-NR.sup.12 R.sup.13, and

R.sup.3 is hydrogen, C.sub.1-10 alkyl, CH.sub.2 OR.sup.8, CN, CH.sub.2 CN, or C.sub.1-6 fluoroalkyl, F, CONR.sup.8.sub.2 ;

R.sup.4 is

(a) hydrogen,

(b) C.sub.1-6 alkyl,

(c) C.sub.1-6 alkoxy,

(d) C.sub.1-6 alkylthio,

(e) --OH,

(f) --OCOR.sup.8,

(g) --SH,

or R.sup.3 and R.sup.4 together with the carbon to which they are attached form a monocyclic ring of 3, 4, 5, 6, or 7 members which ring optionally contains one or two heteroatoms selected from O, S or N;

R.sup.5 is selected from the group consisting of

(a) OR.sup.17,

(b) SR.sup.18, and

(c) NHS(O).sub.2 R.sup.18 ;

each R.sup.8 is independently selected from the group consisting of

(a) hydrogen and

(b) R.sup.9 ;

each R.sup.9 is independently selected from the group consisting of

(a) C.sub.1-10 alkyl,

(b) --C.sub.1-10 alkyl-CO.sub.2 H

(c) C.sub.1-10 alkyl-NH.sub.2

(d) phenyl or mono-, di- or tri-substituted phenyl wherein the substituents are independently selected from halo, C.sub.1-10 alkyl, C.sub.1-10 alkoxy, C.sub.1-10 alkylthio, C.sub.1-10 alklyCO.sub.2 H, C.sub.1-10 alkylNH.sub.2, CN, CO.sub.2 H and CF.sub.3,

(e) benzyl or mono-, di- or tri-substituted benzyl wherein the substituents are independently selected from halo, C.sub.1-10 alkyl, C.sub.1-10 alkoxy, C.sub.1-10 alkylthio, C.sub.1-10 alkylCO.sub.2 H, C.sub.1-10 alkylNH.sub.2, CN, CO.sub.2 H and CF.sub.3,

(f) C.sub.3-10 cycloalkyl,

(g) C.sub.1 -C.sub.10 alkanoyl, and

(h) benzoyl or mono-, di-, or trisubstituted benzoyl wherein the substituents are independently selected from halo, C.sub.1-10 alkyl, C.sub.1-10 alkoxy, C.sub.1-10 alkylthio, C.sub.1-10 alkylCO.sub.2 H, --C.sub.1-10 alkylNH.sub.2, CN, CO.sub.2 H and CF.sub.3,

R.sup.11 is selected from the group consisting of

(a) C.sub.1-10 alkyl,

(b) C.sub.3-10 cycloalkyl,

(c) unsubstituted, mono-, di- or tri-substituted phenyl or naphthyl wherein the substituents are independently selected from the group consisting of

(1) halo,

(2) C.sub.1-6 alkoxy,

(3) C.sub.1-6 alkylthio,

(4) CN,

(5) CF.sub.3,

(6) C.sub.1-6 alkyl,

(7) N.sub.3,

(8) --CO.sub.2 H,

(9) --CO.sub.2 --C.sub.1-6 alkyl,

(10) --C(R.sup.12)(R.sup.13)--OH,

(11) --C(R.sup.12)(R.sup.13)--O--C.sub.1-4 alkyl,

(12) --C.sub.1-6 alkyl-CO.sub.2 --R.sup.12,

(13) benzyloxy,

(14) --O--(C.sub.1-6 alkyl)-CO.sub.2 R.sup.12, and

(15) --O--(C.sub.1-6 alkyl)-NR.sup.12 R.sup.13,

(d) unsubstituted, mono-, di- or tri-substituted heteroaryl wherein the heteroaryl is a monocyclic aromatic ring of 5 atoms, said ring having one hetero atom which is S, O, or N, and optionally 1, 2, or 3 additional N atoms; or said heteroaryl is a monocyclic ring of 6 atoms, said ring having one hetero atom which is N, and optionally 1, 2, or 3 additional N atoms, and wherein said substituents are independently selected from the group consisting of

(1) halo,

(2) C.sub.1-6 alkyl,

(3) C.sub.1-6 alkoxy,

(4) C.sub.1-6 alkylthio,

(5) CN,

(6) CF.sub.3,

(7) N.sub.3,

(8) --C(R.sup.12)(R.sup.13)--OH, and

(9) --C(R.sup.12)(R.sup.13)--O--C.sub.1-6 alkyl;

(e) unsubstituted, mono- or di-substituted benzoheterocycle in which the benzoheterocycle is a 5, 6, or 7-membered ring which contains 1 or 2 heteroatoms independently selected from O, S, or N and optionally a carbonyl group or a sulfonyl group, wherein said substituents are selected from the group consisting of

(1) halo,

(2) C.sub.1-6 alkyl,

(3) C.sub.1-6 alkoxy,

(4) C.sub.1-6 alkylthio,

(5) CN,

(6) CF.sub.3,

(7) N.sub.3,

(8) --C(R.sup.12)(R.sup.13)--OH, and

(9) --C(R.sup.12)(R.sup.13)--O--C.sub.1-10 alkyl;

(f) unsubstituted, mono- or di-substituted benzocarbocycle in which the carbocycle is a 5, 6, or 7-membered ring which optionally contains a carbonyl group, wherein said substituents are independently selected from the group consisting of

(1) halo,

(2) C.sub.1-6 alkyl,

(3) C.sub.1-6 alkoxy,

(4) C.sub.1-6 alkylthio,

(5) CN,

(6) CF.sub.3,

(7) N.sub.3,

(8) --C(R.sup.12)(R.sup.13)--OH, and

(9) --C(R.sup.12)(R.sup.13)--O--C.sub.1-10 alkyl;

each R.sup.12 or R.sup.13 is independently selected from the group consisting of

(a) hydrogen, and

(b) C.sub.1-6 alkyl,

each R.sup.17 is independently selected from the group consisting of

(a) hydrogen and

(b) R.sup.18 ; and

each R.sup.18 is independently selected from the group consisting of

(a) C.sub.1-6 alkyl,

(b) --C.sub.1-10 alkyl-CO.sub.2 H

(c) C.sub.1-6 alkanoyl, and

(d) H-(oxyethyl)n wherein n is 1 to 6.

4. A compound according to claim 3 wherein:

R.sup.1 is selected from the group consisting of

(a) S(O).sub.2 CH.sub.3, and

(b) S(O).sub.2 NHR.sup.8 ;

R.sup.2 is selected from the group consisting of

(a) OR.sup.11,

(b) R.sup.11,

(c) a mono-, di-, tri- or tetra-substituted heterocycloalkyl group of 5, 6 or 7 members or a benzoheterocycle wherein said heterocycloalkyl or benzoheterocycle contains 1 or 2 heteroatoms selected from O, S, or N and optionally contains a carbonyl group or a sulfonyl group, and wherein said substituents are independently selected from the group consisting of

(1) halo,

(2) C.sub.1-4 alkyl,

(3) C.sub.1-4 alkoxy,

(4) C.sub.1-4 alkylthio,

(5) CF.sub.3, and

(6) --C(R.sup.12)(R.sup.13)--OH;

(d) phenylacetylene or mono- or di-substituted phenylacetylene wherein the substituents are independently selected from the group consisting of

(1) halo,

(2) C.sub.1-4 alkyl,

(3) C.sub.1-4 alkoxy,

(4) C.sub.1-4 alkylthio,

(5) CF.sub.3, and

(6) --C(R.sup.12)(R.sup.13)--OH;

R.sup.3 is hydrogen, C.sub.1-4 alkyl, CH.sub.2 OH, or C.sub.1-6 fluoroalkyl, F, CONH.sub.2 ;

R.sup.4 is

(a) hydrogen,

(b) C.sub.1-4 alkyl,

(c) C.sub.1-4 alkoxy,

(d) C.sub.1-4 alkylthio,

(e) --OH,

or R.sup.3 and R.sup.4 together with the carbon to which they are attached form a monocyclic ring of 3, 4, 5, 6, or 7 members which ring optionally contains one or two heteroatoms selected from O, S or N;

R.sup.5 is selected from the group consisting of

(a) OR.sup.17, and

(b) SR.sup.18 ;

each R.sup.8 is independently selected from the group consisting of

(a) hydrogen and

(b) R.sup.9 ;

each R.sup.9 is independently selected from the group consisting of

(a) C.sub.1-4 alkyl,

(b) --C.sub.1-4 alkyl-CO.sub.2 H

(c) phenyl or mono-, di- or tri-substituted phenyl wherein the substituents are independently selected from halo, C.sub.1-4 alkyl, C.sub.1-4 alkoxy, C.sub.1-4 alkylthio, C.sub.1-4 alklyCO.sub.2 H, C.sub.1-4 alkylNH.sub.2, CN, CO.sub.2 H and CF.sub.3,

(f) C.sub.3-6 cycloalkyl,

(g) C.sub.1 -C.sub.4 alkanoyl, and

(h) benzoyl or mono-, di-, or trisubstituted benzoyl wherein the substituents are independently selected from halo, C.sub.1-4 alkyl, C.sub.1-4 alkoxy, C.sub.1-4 alkylthio, C.sub.1-4 alkylCO.sub.2 H, --C.sub.1-4 alkylNH.sub.2, CN, CO.sub.2 H and CF.sub.3,

R.sup.11 is selected from the group consisting of

(a) unsubstituted, mono- or di-substituted phenyl wherein the substituents are independently selected from the group consisting of

(1) halo,

(2) C.sub.1-4 alkoxy,

(3) C.sub.1-4 alkylthio,

(5) CF.sub.3,

(6) C.sub.1-4 alkyl,

(7) --CO.sub.2 H,

(8) --CO.sub.2 --C.sub.1-6 alkyl,

(9) --C(R.sup.12)(R.sup.13)--OH,

(d) unsubstituted, mono- or di-substituted heteroaryl wherein the heteroaryl is a monocyclic aromatic ring of 5 atoms, said ring having one hetero atom which is S, O, or N, and optionally 1, 2, or 3 additional N atoms; or said heteroaryl is a monocyclic ring of 6 atoms, said ring having one hetero atom which is N, and optionally 1, 2, or 3 additional N atoms, and wherein said substituents are independently selected from the group consisting of

(1) halo,

(2) C.sub.1-4 alkoxy,

(3) C.sub.1-4 alkylthio,

(4) CF.sub.3,

(5) C.sub.1-4 alkyl,

(6) --CO.sub.2 H,

(7) --CO.sub.2 --C.sub.1-6 alkyl,

(8) --C(R.sup.12)(R.sup.13)--OH,

(e) unsubstituted, mono- or di-substituted benzoheterocycle in which the benzoheterocycle is a 5, 6, or 7-membered ring which contains 1 or 2 heteroatoms independently selected from O, S, or N and optionally a carbonyl group or a sulfonyl group, wherein said substituents are selected from the group consisting of

(1) halo,

(2) C.sub.1-4 alkoxy,

(3) C.sub.1-4 alkylthio,

(4) CF.sub.3,

(5) C.sub.1-4 alkyl,

(6) --CO.sub.2 H,

(7) --CO.sub.2 --C.sub.1-6 alkyl,

(8) --C(R.sup.12)(R.sup.13)--OH,

(f) unsubstituted, mono- or di-substituted benzocarbocycle in which the carbocycle is a 5, 6, or 7-membered ring which optionally contains a carbonyl group, wherein said substituents are independently selected from the group consisting of

(1) halo,

(2) C.sub.1-4 alkoxy,

(3) C.sub.1-4 alkylthio,

(4) CF.sub.3,

(5) C.sub.1-4 alkyl,

(6) --CO.sub.2 H,

(7) --CO.sub.2 --C.sub.1-6 alkyl,

(8) --C(R.sup.12)(R.sup.13)--OH,

each R.sup.12 or R.sup.13 is independently selected from the group consisting of

(a) hydrogen, and

(b) C.sub.1-6 alkyl,

each R.sup.17 is independently selected from the group consisting of

(a) hydrogen and

(b) R.sup.18 ; and

each R.sup.18 is independently selected from the group consisting of

(a) C.sub.1-4 alkyl,

(b) --C.sub.1-4 alkyl-CO.sub.2 H

(c) C.sub.1-6 alkanoyl, and

(d) H-(oxyethyl)n wherein n is 1 to 4.

5. A compound according to claim 4 wherein:

R.sup.1 is selected from the group consisting of

(a) S(O).sub.2 CH.sub.3, and

(b) S(O).sub.2 NH.sub.2 ;

R.sup.2 is selected from the group consisting of

(a) OR.sup.11,

(b) R.sup.11,

(c) a mono- or di-substituted heterocycloalkyl group of 5 or 6 members or a benzoheterocycle wherein said heterocycloalkyl or benzoheterocycle contains 1 or 2 heteroatoms selected from O, S, or N and optionally contains a carbonyl group or a sulfonyl group, and wherein said substituents are independently selected from the group consisting of

(1) halo,

(2) C.sub.1-3 alkyl,

(3) C.sub.1-3 alkoxy,

(4) C.sub.1-3 alkylthio, and

(5) CF.sub.3,

(d) phenylacetylene or mono- or di-substituted phenylacetylene wherein the substituents are independently selected from the group consisting of

(1) halo,

(2) C.sub.1-3 alkyl,

(3) C.sub.1-3 alkoxy,

(4) C.sub.1-3 alkylthio, and

(5) CF.sub.3,

R.sup.3 is hydrogen, C.sub.1-4 alkyl, C.sub.1-6 fluoroalkyl or F;

R.sup.4 is

(a) hydrogen,

(b) C.sub.1-3 alkyl,

(c) C.sub.1-3 alkoxy,

(d) C.sub.1-3 alkylthio,

(e) --OH,

or R.sup.3 and R.sup.4 together with the carbon to which they are attached form a monocyclic ring of 3, 4, 5 or 6 members which ring optionally contains one or two heteroatoms selected from O, S or N;

R.sup.5 is selected from the group consisting of

(a) OR.sup.17, and

(b) SR.sup.18 ;

each R.sup.8 is independently selected from the group consisting of

(a) hydrogen and

(b) R.sup.9 ;

each R.sup.9 is independently selected from the group consisting of

(a) C.sub.1-4 alkyl,

(b) --C.sub.1-4 alkyl-CO.sub.2 H

(f) C.sub.3-6 cycloalkyl,

(g) C.sub.1-3 alkanoyl, and

R.sup.11 is selected from the group consisting of

(a) unsubstituted, mono- or di-substituted phenyl wherein the substituents are independently selected from the group consisting of

(1) F or Cl,

(2) C.sub.1-4 alkoxy,

(3) C.sub.1-4 alkylthio,

(5) CF.sub.3,

(6) C.sub.1-4 alkyl, and

(7) --CO.sub.2 H,

(d) unsubstituted, mono- or di-substituted heteroaryl wherein the heteroaryl is a monocyclic aromatic ring of 5 atoms, said ring having one hetero atom which is S, O, or N, and optionally 1, 2, or 3 additional N atoms; or said heteroaryl is a monocyclic ring of 6 atoms, said ring having one hetero atom which is N, and optionally 1, 2, or 3 additional N atoms, and wherein said substituents are independently selected from the group consisting of

(1) F or Cl,

(2) C.sub.1-4 alkoxy,

(3) C.sub.1-4 alkylthio,

(5) CF.sub.3,

(6) C.sub.1-4 alkyl, and

(7) --CO.sub.2 H,

(e) unsubstituted, mono- or di-substituted benzoheterocycle in which the benzoheterocycle is a 5 or 6-membered ring which contains 1 or 2 heteroatoms independently selected from O, S, or N and optionally a carbonyl group or a sulfonyl group, wherein said substituents are selected from the group consisting of

(1) F or Cl,

(2) C.sub.1-4 alkoxy,

(3) C.sub.1-4 alkylthio,

(5) CF.sub.3,

(6) C.sub.1-4 alkyl, and

(7) --CO.sub.2 H,

(f) unsubstituted, mono- or di-substituted benzocarbocycle in which the carbocycle is a 5 or 6-membered ring which optionally contains a carbonyl group, wherein said substituents are independently selected from the group consisting of

(1) F or Cl,

(2) C.sub.1-4 alkoxy,

(3) C.sub.1-4 alkylthio,

(5) CF.sub.3,

(6) C.sub.1-4 alkyl, and

(7) --CO.sub.2 H,

each R.sup.17 is independently selected from the group consisting of

(a) hydrogen and

(b) R.sup.18 ; and

each R.sup.18 is independently selected from the group consisting of

(a) C.sub.1-4 alkyl,

(b) --C.sub.1-4 alkyl-CO.sub.2 H

(c) C.sub.1-4 alkanoyl, and

(d) H-(oxyethyl)n wherein n is 1, 2, 3 or 4.

6. A compound according to claim 5 wherein:

R.sup.1 is selected from the group consisting of

(a) S(O).sub.2 CH.sub.3, and

(b) S(O).sub.2 NH.sub.2 ;

R.sup.2 is selected from the group consisting of

(a) OR.sup.11,

(b) R.sup.11,

(c) a mono- or di-substituted heterocycloalkyl group of 5 or 6 members wherein said heterocycloalkyl contains 1 or 2 heteroatoms which is N and optionally contains a carbonyl group, and wherein said substituents are independently selected from the group consisting of

(1) Cl or F,

(2) C.sub.1-2 alkyl, and

(3) C.sub.1-2 alkoxy,

(d) phenylacetylene or mono- or di-substituted phenylacetylene wherein the substituents are independently selected from the group consisting of

(1) Cl or F,

(2) C.sub.1-2 alkyl, and

(3) C.sub.1-2 alkoxy,

R.sup.3 is hydrogen, C.sub.1-3 alkyl;

R.sup.4 is hydrogen, C.sub.1-3 alkyl;

or R.sup.3 and R.sup.4 together with the carbon to which they are attached form a monocyclic ring of 3, 4, 5 or 6 carbon atoms;

R.sup.5 is selected from the group consisting of

(a) OR.sup.17, and

(b) SR.sup.18 ;

each R.sup.8 is independently selected from the group consisting of

(a) hydrogen and

(b) R.sup.9 ;

each R.sup.9 is independently selected from the group consisting of

(a) C.sub.1-4 alkyl,

(b) --C.sub.1-4 alkyl-CO.sub.2 H

(f) C.sub.3-6 cycloalkyl, and

(g) C.sub.1-3 alkanoyl,

R.sup.11 is selected from the group consisting of

(a) unsubstituted, mono- or di-substituted phenyl wherein the substituents are independently selected from the group consisting of

(1) F or Cl,

(2) C.sub.1-4 alkoxy,

(3) C.sub.1-4 alkylthio,

(5) CF.sub.3,

(6) C.sub.1-4 alkyl, and

(7) --CO.sub.2 H,

(d) unsubstituted, mono- or di-substituted heteroaryl wherein the heteroaryl is a monocyclic aromatic ring of 5 atoms, said ring having one hetero atom which is S, O, or N, and optionally 1, 2, or 3 additional N atoms; or said heteroaryl is a monocyclic ring of 6 atoms, said ring having one hetero atom which is N, and optionally 1, 2, or 3 additional N atoms, and wherein said substituents are independently selected from the group consisting of

(1) F or Cl,

(2) C.sub.1-4 alkoxy,

(3) C.sub.1-4 alkylthio,

(5) CF.sub.3,

(6) C.sub.1-4 alkyl, and

(7) --CO.sub.2 H,

(e) unsubstituted, mono- or di-substituted benzoheterocycle in which the benzoheterocycle is a 5 or 6-membered ring which contains 1 or 2 heteroatoms independently selected from O, S, or N and optionally a carbonyl group or a sulfonyl group, wherein said substituents are selected from the group consisting of

(1) F or Cl,

(2) C.sub.1-4 alkoxy,

(3) C.sub.1-4 alkylthio,

(5) CF.sub.3,

(6) C.sub.1-4 alkyl, and

(7) --CO.sub.2 H,

(f) unsubstituted, mono- or di-substituted benzocarbocycle in which the carbocycle is a 5 or 6-membered ring which optionally contains a carbonyl group, wherein said substituents are independently selected from the group consisting of

(1) F or Cl,

(2) C.sub.1-4 alkoxy,

(3) C.sub.1-4 alkylthio,

(5) CF.sub.3,

(6) C.sub.1-4 alkyl, and

(7) --CO.sub.2 H,

each R.sup.17 is independently selected from the group consisting of

(a) hydrogen and

(b) R.sup.18 ; and

each R.sup.18 is independently selected from the group consisting of

(a) C.sub.1-4 alkyl,

(b) --C.sub.1-4 alkyl-CO.sub.2 H

(c) C.sub.1-6 alkanoyl, and

(d) H-(oxyethyl)n wherein n is 1 to 4.

7. A compound according to claim 6 wherein:

R.sup.1 is selected from the group consisting of

(a) S(O).sub.2 CH.sub.3, and

(b) S(O).sub.2 NH.sub.2 ;

R.sup.2 is selected from the group consisting of

(a) OR.sup.11,

(b) R.sup.11,

(c) a mono- or di-substituted heterocycloalkyl group of 5 or 6 members wherein said heterocycloalkyl contains 1 or 2 heteroatoms which is N and optionally contains a carbonyl group, and wherein said substituents are independently selected from the group consisting of

(1) Cl or F,

(2) C.sub.1-2 alkyl, and

(3) C.sub.1-2 alkoxy;

R.sup.3 is hydrogen, methyl or ethyl;

R.sup.4 is hydrogen, methyl or ethyl;

R.sup.5 is OR.sup.17 ;

R.sup.11 is selected from the group consisting of

(a) unsubstituted, mono- or di-substituted phenyl wherein the substituents are independently selected from the group consisting of

(1) F or Cl,

(2) C.sub.1-4 alkoxy,

(3) C.sub.1-4 alkylthio,

(5) CF.sub.3,

(6) C.sub.1-4 alkyl, and

(7) --CO.sub.2 H,

(b) unsubstituted, mono- or di-substituted heteroaryl wherein the heteroaryl is a monocyclic aromatic ring of 5 atoms, said ring having one hetero atom which is S, O, or N, and optionally 1, 2, or 3 additional N atoms; or said heteroaryl is a monocyclic ring of 6 atoms, said ring having one hetero atom which is N, and optionally 1, 2, or 3 additional N atoms, and wherein said substituents are independently selected from the group consisting of

(1) F or Cl,

(2) C.sub.1-4 alkoxy,

(3) C.sub.1-4 alkylthio,

(5) CF.sub.3,

(6) C.sub.1-4 alkyl, and

(7) --CO.sub.2 H,

each R.sup.17 is independently selected from the group consisting of

(a) hydrogen and

(b) R.sup.18 ; and

each R.sup.18 is independently selected from the group consisting of

(a) C.sub.1-4 alkyl,

(b) --C.sub.1-4 alkyl-CO.sub.2 H

(c) C.sub.1-6 alkanoyl, and

(d) H-(oxyethyl)n wherein n is 2, 3 or 4.

8. A compound according to claim 7 wherein:

R.sup.1 is selected from the group consisting of

(a) S(O).sub.2 CH.sub.3, and

(b) S(O).sub.2 NH.sub.2 ;

R.sup.2 is selected from the group consisting of

(a) OR.sup.11,

(b) R.sup.11,

(c) a mono- or di-substituted heterocycloalkyl group of 5 or 6 members wherein said heterocycloalkyl contains 1 or 2 heteroatoms which is N and optionally contains a carbonyl group, and wherein said substituents are independently selected from the group consisting of

(1) Cl or F,

(2) C.sub.1-2 alkyl, and

(3) C.sub.1-2 alkoxy;

R.sup.3 is hydrogen, methyl or ethyl;

R.sup.4 is hydrogen, methyl or ethyl;

R.sup.5 is OR.sup.17 ;

R.sup.11 is selected from the group consisting of

(a) unsubstituted, mono- or di-substituted phenyl wherein the substituents are independently selected from the group consisting of

(1) F or Cl,

(2) C.sub.1-4 alkoxy,

(3) C.sub.1-4 alkylthio,

(5) CF.sub.3,

(6) C.sub.1-4 alkyl, and

(7) --CO.sub.2 H,

(b) unsubstituted, mono- or di-substituted heteroaryl wherein the heteroaryl is a monocyclic aromatic ring of 5 atoms, said ring having one hetero atom which is S, O, or N, and optionally 1, 2, or 3 additional N atoms; or said heteroaryl is a monocyclic ring of 6 atoms, said ring having one hetero atom which is N, and optionally 1, 2, or 3 additional N atoms, and wherein said substituents are independently selected from the group consisting of

(1) F or Cl,

(2) C.sub.1-4 alkoxy,

(3) C.sub.1-4 alkylthio,

(5) CF.sub.3,

(6) C.sub.1-4 alkyl, and

(7) --CO.sub.2 H,

each R.sup.17 is independently selected from the group consisting of

(a) hydrogen and

(b) R.sup.18 ; and

each R.sup.18 is independently selected from the group consisting of

(a) C.sub.1-4 alkyl,

(b) --C.sub.1-4 alkyl-CO.sub.2 H

(c) C.sub.1-6 alkanoyl, and

(d) H-(oxyethyl)n wherein n is 2, 3 or 4.

9. A compound according to claim 8 wherein:

R.sup.1 is selected from the group consisting of

(a) S(O).sub.2 CH.sub.3, and

(b) S(O).sub.2 NH.sub.2 ;

R.sup.2 is selected from the group consisting of

(a) OR.sup.11,

(b) R.sup.11,

R.sup.3 is hydrogen, methyl or ethyl;

R.sup.4 is hydrogen, methyl or ethyl;

R.sup.5 is OR.sup.17 ;

R.sup.11 is an unsubstituted, mono- or di-substituted phenyl wherein the substituents are independently selected from the group consisting of

(1) F or Cl,

(2) C.sub.1-4 alkoxy,

(3) C.sub.1-4 alkylthio,

(5) CF.sub.3,

(6) C.sub.1-4 alkyl, and

(7) --CO.sub.2 H,

each R.sup.17 is independently selected from the group consisting of

(a) hydrogen and

(b) R.sup.18 ; and

each R.sup.18 is independently selected from the group consisting of

(a) C.sub.1-3 alkyl,

(b) --C.sub.1-3 alkyl-CO.sub.2 H

(c) C.sub.1-3 alkanoyl, and

(d) H-(oxyethyl)n wherein n is 2 to 4.

10. A compound according to claim 8 wherein

R.sup.2 is a mono- or di-substituted heteroaryl wherein heteroaryl is selected from the group consisting of

(1) furanyl,

(2) diazinyl,

(3) imidazolyl,

(4) isooxazolyl,

(5) isothiazolyl,

(6) oxadiazolyl,

(7) oxazolyl,

(8) pyrazolyl,

(9) pyridyl,

(10) pyrrolyl,

(11) tetrazinyl,

(12) tetrazolyl,

(13) thiadiazolyl,

(14) thiazolyl,

(15) thienyl,

(16) triazinyl, or

(17) triazolyl, and the substituents are selected from the group consisting of

(1) hydrogen,

(2) halo,

(3) C.sub.1-4 alkyl,

(4) C.sub.1-4 alkoxy,

(5) C.sub.1-4 alkylthio,

(6) CN, and

(7) CF.sub.3.

11. A compound according to claim 10 wherein

R.sup.2 is a mono- or di-substituted heteroaryl wherein heteroaryl is selected from the group consisting of

(1) furanyl,

(2) diazinyl,

(3) imidazolyl,

(4) isooxazolyl,

(5) isothiazolyl,

(6) oxadiazolyl,

(7) oxazolyl,

(8) pyrazolyl,

(9) pyridyl,

(10) pyrrolyl,

(11) thiazolyl,

(12) thienyl, wherein the substituents are selected from the group consisting of

(1) hydrogen,

(2) halo,

(3) C.sub.1-3 alkyl,

(4) C.sub.1-3 alkoxy,

(7) CF.sub.3.

12. A compound according to claim 11 wherein

R.sup.2 is a mono- or di-substituted heteroaryl wherein heteroaryl is selected from the group consisting of

(1) furanyl,

(2) diazinyl,

(3) imidazolyl,

(4) oxadiazolyl,

(5) pyrazolyl,

(6) pyridyl,

(7) pyrrolyl,

(8) thiazolyl,

(9) thienyl, wherein the substituents are selected from the group consisting of

(1) hydrogen,

(2) halo,

(3) methyl,

(4) methoxy, and

(5) CF.sub.3.

13. A compound according to claim 12 wherein

R.sup.2 is a mono- or di-substituted heteroaryl wherein heteroaryl is selected from the group consisting of

(1) furanyl,

(2) diazinyl,

(3) imidazolyl,

(4) oxadiazolyl,

(5) pyrazolyl,

(6) pyridyl,

(7) thiazolyl,

(8) thienyl, wherein the substituents are selected from the group consisting of

(1) hydrogen,

(2) Cl or F,

(3) methyl,

(4) methoxy,

(5) CF3.

14. A compound according to claim 1 selected from the group consisting of

(a) 5,5-Dimethyl-3-(3-fluorophenyl)-2-hydroxy-4-(4-(methylsulfonyl)phenyl)-2,5 -dihydrofuran,

(b) 3-(3,5-Difluorophenyl)-5,5-dimethyl-2-hydroxy-4-(4-(methylsulfonyl)phenyl) -2,5-dihydrofuran,

(c) 5,5-Dimethyl-3-(4-fluorophenyl)-2-hydroxy-4-(4-(methylsulfonyl)phenyl)-2,5 -dihydrofuran,

(d) 5,5-Dimethyl-3-(4-fluorophenyl)-2-methoxy-4-(4-(methylsulfonyl)phenyl)-2,5 -dihydrofuran,

(e) 5,5-Dimethyl-2-ethoxy-3-(3-fluorophenyl)-4-(4-(methylsulfonyl)phenyl)-2,5- dihydrofuran,

(f) 5,5-Dimethyl-3-(3-fluorophenyl)-2-isopropoxy-4-(4-(methylsulfonyl)phenyl)- 2,5-dihydrofuran,

(g) 5,5-Dimethyl-3-(3-fluorophenyl)-4-(4-(methylsulfonyl)phenyl)-2-methylthio- 2,5-dihydrofuran,

(h) 5-Ethyl-3-(4-fluorophenyl)-2-hydroxy-5-methyl-4-(4-(methylsulfonyl)phenyl) -2,5-dihydrofuran,

(i) 5,5-Dimethyl-3-(3-fluorophenoxy)-2-hydroxy-4-(4-(methylsulfonyl)phenyl)-2, 5-dihydrofuran,

(j) 5,5-Dimethyl-3-(3,4-difluorophenoxy)-2-hydroxy-4-(4-(methylsulfonyl)phenyl )-2,5-dihydrofuran,

(k) 3-(3,4-Difluorophenyl)-2-hydroxy-4-(4-(methylsulfonyl)phenyl)-2,5-dihydrof uran

(l) 2-Acetoxy-5,5-dimethyl-3-(3-fluorophenyl)-4-(4-(methylsulfonyl)phenyl)-2,5 -dihydrofuran,

(m) Sodium(5,5-dimethyl-3-(3-fluorophenyl)-4-(4-(methylsulfonyl)phenyl)-2,5-di hydrofuran-2-yloxy) actetate,

(n) 3-isopropoxy-5,5-dimethyl-4-(4-methylsulfonylphenyl)-2,5-dihydrofuran-2-ol ),

(o) 5,5-Dimethyl-4-(4-methylsulfonylphenyl)-3 phenyl-2,5-dihydrofuran-2-ol),

(p) 3-(3-Fluorophenyl)-5,5-dimethyl-4-(4-methylsulfonylphenyl)-2,5-dihydrofura n-2-ol),

(q) 3-(3,4-Difluorophenyl)-5,5-dimethyl-4-(4-methylsulfonylphenyl)-2,5-dihydro furan-2-ol),

(r) 3-(1-Cyclopropylethoxy)-5,5-dimethyl-4-(4-methylsulfonylphenyl)-2,5-dihydr ofuran-2-ol),

(s) 3-(Cyclopropylmethoxy)-5,5-dimethyl-4-(4-methylsulfonylphenyl)-2,5-dihydro furan-2-ol), and

(t) 3-(3,4-Difluorophenoxy)-5-methyl-4-(4-methylsulfonylphenyl)-5-2,2,2-triflu oroethyl)-2,5-dihydrofuran-2-ol).

15. A pharmaceutical composition for treating an inflammatory disease susceptable to treatment with an non-steroidal anti-inflammatory agent comprising:

a non-toxic therapeutically effective amount of a compound according to claim 1 and a pharmaceutically acceptable carrier.

16. A pharmaceutical composition for treating cyclooxygenase mediated diseases advantageously treated by an active agent that selectively inhibits COX-2 in preference to COX-1 comprising:

a non-toxic therapeutically effective amount of a compound according to claim 1 and a pharmaceutically acceptable carrier.

17. A method of treating an inflammatory disease susceptable to treatment with an non-steroidal anti-inflammatory agent comprising:

administration to a patient in need of such treatment of a non-toxic therapeutically effective amount of a compound according to claim 1 and a pharmaceutically acceptable carrier.

18. A method of treating cyclooxygenase mediated diseases advantageously treated by an active agent that selectively inhibits COX-2 in preference to COX-1 comprising:

administration to a patient in need of such treatment of a non-toxic therapeutically effective amount of a compound according to claim 1.
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