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|Title:||Inhibitors of Bruton's tyrosine kinase|
|Abstract:||Disclosed herein are compounds, including compounds having the structure of Formula (A), (B), (C), and (D), as described in further detail herein, that form covalent bonds with Bruton's tyrosine kinase (Btk). Also described are irreversible inhibitors of Btk. Methods for the preparation of the compounds are disclosed. Also disclosed are pharmaceutical compositions that include the compounds. Methods of using the Btk inhibitors are disclosed, alone or in combination with other therapeutic agents, for the treatment of autoimmune diseases or conditions, heteroimmune diseases or conditions, cancer, including lymphoma, and inflammatory diseases or conditions.|
|Inventor(s):||Honigberg; Lee (San Francisco, CA), Verner; Erik (Belmont, CA), Pan; Zhengying (Austin, TX)|
|Assignee:||Pharmacyclics, Inc. (Sunnyvale, CA)|
|Filing Date:||May 15, 2012|
|Claims:||1. An inhibited tyrosine kinase comprising an irreversible Bruton's tyrosine kinase (Btk) inhibitor having a Michael acceptor moiety wherein a covalent bond is formed between a portion of the Michael acceptor moiety and a portion of a cysteine residue of a Bruton's tyrosine kinase, and the Btk inhibitor is a compound having the structure of Formula (A): ##STR00057## wherein: A is N; R.sub.1 is phenyl-O-phenyl or phenyl-S-phenyl; R.sub.2 and R.sub.3 are independently H; R.sub.4 is L.sub.3-X-L.sub.4-G, wherein, L.sub.3 is optional, and when present is an optionally substituted or unsubstituted alkyl, optionally substituted or unsubstituted cycloalkyl, optionally substituted or unsubstituted alkenyl, optionally substituted or unsubstituted alkynyl; X is optional, and when present is O, --C(.dbd.O), S, --S(.dbd.O), --S(.dbd.O).sub.2, --NH, --NR.sub.9, --NHC(O), --C(O)NH, --NR.sub.9C(O), --C(O)NR.sub.9, --S(.dbd.O).sub.2NH, --NHS(.dbd.O).sub.2, --S(.dbd.O).sub.2NR.sub.9-- --NR.sub.9S(.dbd.O).sub.2, --OC(O)NH--, --NHC(O)O--, --OC(O)NR.sub.9--, --NR.sub.9C(O)O--, --CH.dbd.NO--, --ON.dbd.CH--, --NR.sub.10C(O)NR.sub.10--, heteroaryl, aryl, --NR.sub.10C(.dbd.NR.sub.11)NR.sub.10--, --NR.sub.10C(.dbd.NR.sub.11)--, --C(.dbd.NR.sub.11)NR.sub.10--, --OC(.dbd.NR.sub.11)--, or --C(.dbd.NR.sub.11)O--; L.sub.4 is optional, and when present is a substituted or unsubstituted alkyl, substituted or unsubstituted cycloalkyl, substituted or unsubstituted alkenyl, substituted or unsubstituted alkynyl, substituted or unsubstituted aryl, substituted or unsubstituted heteroaryl, substituted or unsubstituted heterocycle; or L.sub.3, X and L.sub.4 taken together form a nitrogen containing heterocyclic ring; G is ##STR00058## wherein, R.sub.6, R.sub.7 and R.sub.8 are independently selected from among H, lower alkyl or substituted lower alkyl, lower heteroalkyl or substituted lower heteroalkyl, substituted or unsubstituted lower cycloalkyl, and substituted or unsubstituted lower heterocycloalkyl; each R.sub.9 is independently selected from among H, substituted or unsubstituted lower alkyl, and substituted or unsubstituted lower cycloalkyl; each R.sub.10 is independently H, substituted or unsubstituted lower alkyl, or substituted or unsubstituted lower cycloalkyl; or two R.sub.10 groups can together form a 5-, 6-, 7-, or 8-membered heterocyclic ring; or R.sub.9 and R.sub.10 can together form a 5-, 6-, 7-, or 8-membered heterocyclic ring; and each R.sub.11 is independently selected from H, --S(.dbd.O).sub.2R.sub.8, --S(.dbd.O).sub.2NH.sub.2, --C(O)R.sub.8, --CN, --NO.sub.2, heteroaryl, or heteroalkyl; or a pharmaceutically acceptable salt thereof. |
2. The inhibited tyrosine kinase of claim 1, wherein the Btk inhibitor is a compound having the structure: ##STR00059##
3. The inhibited tyrosine kinase of claim 1, wherein the Btk inhibitor is bound to cysteine residue 481 of Btk.
4. The inhibited tyrosine kinase of either claim 1 and 2, wherein the Bruton's tyrosine kinase is activated phosphorylated at tyrosine residue 223 or tyrosine residue 551 of Btk.
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