摘要:
The stereoselective synthesis of the novel marine natural product, bengamide B (1), starting from L-quebrachitol (3) is described. The hydroxylated caprolactam portion (2a) in 1 was prepared from (+)-conduramine derivative (7), whose amino functionality was introduced stereoselectively by means of palladium-catalyzed azidation of a chiral cyclohexene (6) derived from 3.