The present invention is directed to compounds of formula I-V and tautomers thereof or pharmaceutically acceptable salts, esters, and prodrugs thereof which are inhibitors of syk kinase. The present invention is also directed to intermediates used in making such compounds, the preparation of such a compound, pharmaceutical compositions containing such a compound, methods of inhibition syk kinase activity, methods of inhibition the platelet aggregation, and methods to prevent or treat a number of conditions mediated at least in part by syk kinase activity, such as undesired thrombosis and Non Hodgkin's Lymphoma.
The present invention is directed to compounds of formula I-V and tautomers thereof or pharmaceutically acceptable salts, esters, and prodrugs thereof which are inhibitors of syk kinase. The present invention is also directed to intermediates used in making such compounds, the preparation of such a compound, pharmaceutical compositions containing such a compound, methods of inhibition syk kinase activity, methods of inhibition the platelet aggregation, and methods to prevent or treat a number of conditions mediated at least in part by syk kinase activity, such as undesired thrombosis and Non Hodgkin's Lymphoma.
Discovery of Sulfonamidebenzamides as Selective Apoptotic CHOP Pathway Activators of the Unfolded Protein Response
作者:Daniel P. Flaherty、Justin R. Miller、Danielle M. Garshott、Michael Hedrick、Palak Gosalia、Yujie Li、Monika Milewski、Eliot Sugarman、Stefan Vasile、Sumeet Salaniwal、Ying Su、Layton H. Smith、Thomas D. Y. Chung、Anthony B. Pinkerton、Jeffrey Aubé、Michael U. Callaghan、Jennifer E. Golden、Andrew M. Fribley、Randal J. Kaufman
DOI:10.1021/ml5003234
日期:2014.12.11
Cellular proteins that fail to fold properly result in inactive or disfunctional proteins that can have toxic functions. The unfolded protein response (UPR) is a two-tiered cellular mechanism initiated by eukaryotic cells that have accumulated misfolded proteins within the endoplasmic reticulum (ER). An adaptive pathway facilitates the clearance of the undesired proteins; however, if overwhelmed, cells trigger apoptosis by upregulating transcription factors such as C/EBP-homologous protein (CHOP). A high throughput screen was performed directed at identifying compounds that selectively upregulate the apoptotic CHOP pathway while avoiding adaptive signaling cascades, resulting in a sulfonamidebenzamide chemotype that was optimized. These efforts produced a potent and selective CHOP inducer (AC(50) = 0.8 mu M; XBP1 > 80 mu M), which was efficacious in both mouse embryonic fibroblast cells and a human oral squamous cell cancer cell line, and demonstrated antiproliferative effects for multiple cancer cell lines in the NCI-60 panel.
2,6-DIAMINO- PYRIMIDIN- 5-YL-CARBOXAMIDES AS SYK OR JAK KINASES INHIBITORS