Semisynthetic Cyclopamine Analogues as Potent and Orally Bioavailable Hedgehog Pathway Antagonists
作者:Martin R. Tremblay、Marta Nevalainen、Somarajan J. Nair、James R. Porter、Alfredo C. Castro、Mark L. Behnke、Lin-Chen Yu、Margit Hagel、Kerry White、Kerrie Faia、Louis Grenier、Matthew J. Campbell、Jill Cushing、Caroline N. Woodward、Jennifer Hoyt、Michael A. Foley、Margaret A. Read、Jens R. Sydor、Jeffrey K. Tong、Vito J. Palombella、Karen McGovern、Julian Adams
DOI:10.1021/jm8008508
日期:2008.11.13
cyclopamine. The acid sensitive D-ring of cyclopamine was homologated utilizing a sequence of chemoselective cyclopropanation and stereoselective acid-catalyzedrearrangement. Further modification of the A/B-ring homoallylic alcohol to the conjugated ketone led to the discovery of new cyclopamine analogues with improved pharmaceutical properties and in vitro potency (EC 50) ranging from 10 to 1000 nM