Une synthese totale stereospecifique de c-nor d-homosteroides comportant six carbones asymetriques
作者:Eric Brown、Jacques Lebreton
DOI:10.1016/s0040-4020(01)87789-9
日期:——
An efficient and stereoselective total synthesis of C-nor D-homosteroid compounds is described, following a general pathway of the A→B→C→D type. The A-B ring system was provided by the Wieland-Miescher ketone . the ringC was formed by intramolecular cyclisation of an appropiate γ-diketone such as . Construction of the ringD was achieved by means of a Birch reductive alkylattion, followed by intramolecular