Studies on Taxane Synthesis. III. Stereocontrolled Synthesis of a Twelve-Membered Lactam Sulfide as a Precursor of 4,8,11,11-Tetramethyl-3-oxobicyclo(5.3.1)undec-8-ene.
Studies on Taxane Synthesis. III. Stereocontrolled Synthesis of a Twelve-Membered Lactam Sulfide as a Precursor of 4,8,11,11-Tetramethyl-3-oxobicyclo(5.3.1)undec-8-ene.
A general and efficient route to enantioselective synthesis of pumiliotoxin A alkaloids via a common key intermediate
作者:Bing Wang、Kai Fang、Guo-Qiang Lin
DOI:10.1016/j.tetlet.2003.08.113
日期:2003.10
A general and efficient formal synthesis of pumiliotoxins and allopumiliotoxins has been achieved via a common key intermediate 3a. Our route featured a novel one-pot substitution–ring-opening sequence and an efficient Claisen-type condensation. This method is also applicable to quinolizidine derivative 2b.