An Epoxide-Based Enantioselective Synthesis of the Antifungal Antibiotic (+)-Preussin
作者:Christian Beier、Ernst Schaumann
DOI:10.1055/s-1997-1347
日期:1997.11
The enantioselective total synthesis of (2S,3S,5R)-1-methyl-5-nonyl-2-(phenylmethyl)-3-pyrrolidinol, (+)-preussin 1, from (S)-phenylalanine is described. Key steps involve ring-opening of a (1-aminoalkyl)epoxide 5 by an allyl anion, [2,3]-sigmatropic rearrangement of 9 and cyclization of aminoepoxide 11 to give the pyrrolidine unit 12 with the correct stereochemistry.
本研究描述了从(S)-苯丙氨酸对映选择性全合成(2S,3S,5R)-1-甲基-5-壬基-2-(苯基甲基)-3-吡咯烷醇,即 (+)-preussin 1。关键步骤包括烯丙基阴离子环开(1-氨基烷基)环氧化物 5、[2,3]-三向异性重排 9 和环化氨基环氧化物 11,从而得到具有正确立体化学结构的吡咯烷单元 12。