Synthesis and biological evaluation of synthetic viridins derived from C(20)-heteroalkylation of the steroidal PI-3-kinase inhibitor wortmannin
作者:Peter Wipf、Daniel J. Minion、Robert J. Halter、Margareta I. Berggren、Caroline B. Ho、Gary G. Chiang、Lynn Kirkpatrick、Robert Abraham、Garth Powis
DOI:10.1039/b405431h
日期:——
A series of viridin analogs was prepared from wortmannin by nucleophilic ring opening at C(20) and evaluated against the signaling kinases PI-3-kinase and mTOR. Several subnanomolar enzyme inhibitors with orders of magnitude selectivity for PI-3-kinase and strong cytotoxic activity against four cancer cell lines were identified. Among the ten most promising derivatives, six demonstrated lower liver