Discovery and structure–activity relationship of 2-phenyl-oxazole-4-carboxamide derivatives as potent apoptosis inducers
作者:Vincent W.-F. Tai、David Sperandio、Emma J. Shelton、Joane Litvak、Keith Pararajasingham、Ben Cebon、Julia Lohman、John Eksterowicz、Seema Kantak、Peter Sabbatini、Cindy Brown、Jennifer Zeitz、Chris Reed、Bill Maske、Doris Graupe、Alberto Estevez、Jason Oeh、Darren Wong、Yong Ni、Paul Sprengeler、Robert Yee、Catherine Magill、Anthony Neri、Sui Xiong Cai、John Drewe、Ling Qiu、John Herich、Ben Tseng、Shailaja Kasibhatla、Jeffrey R. Spencer
DOI:10.1016/j.bmcl.2006.06.018
日期:2006.9
As a continuation of our efforts to discover novel apoptosis inducers as anticancer agents using a cell-based caspase HTS assay, 2-phenyl-oxazole-4-carboxamide derivatives were identified. The structure-activity relationships of this class of molecules were explored. Compound 1k, with EC50 of 270 nM and GI(50) of 229 nM in human colorectal DLD-1 cells, was selected and demonstrated the ability to cleave PARP and displayed DNA laddering, the hallmarks of apoptosis. Compound 1k showed 63% tumor growth inhibition in human colorectal DLD-1 xenograft mouse model at 50 mpk, bid. (c) 2006 Elsevier Ltd. All rights reserved.