Use of dilithiomethane equivalent in a novel one-flask [2 + 1 + 2] cyclopentannulation reaction: a highly efficient total synthesis of (.+-.)-hirsutene.
摘要:
A brief synthesis of (+/-)-hirsutene demonstrates the novel use of tris(phenylthio)methane as a dilithiomethane equivalent capable of consecutive conjugate additions to different enones to form a dienolate which can be oxidized to a cyclopentane.