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  • Title: Discovery and structure-activity relationship of 2-phenyl-oxazole-4-carboxamide derivatives as potent apoptosis inducers.
    Author: Tai VW, Sperandio D, Shelton EJ, Litvak J, Pararajasingham K, Cebon B, Lohman J, Eksterowicz J, Kantak S, Sabbatini P, Brown C, Zeitz J, Reed C, Maske B, Graupe D, Estevez A, Oeh J, Wong D, Ni Y, Sprengeler P, Yee R, Magill C, Neri A, Cai SX, Drewe J, Qiu L, Herich J, Tseng B, Kasibhatla S, Spencer JR.
    Journal: Bioorg Med Chem Lett; 2006 Sep 01; 16(17):4554-8. PubMed ID: 16784854.
    Abstract:
    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 EC(50) 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.
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