The first total asymmetric synthesis and the attribution of the absoluteconfigurations of (+)-dienomycin C (1), an alkaloid isolated from a Streptomyces strain, are reported. This compound was prepared in six steps from the enantiopure tricarbonyl(dienal)iron complex (+)-4 which is easily obtained by separating preformed diastereomers, starting from phenylpentadienoic acid and (S)-methyl mandelate
报道了从链霉菌属菌株中分离出的生物碱 (+)-双烯霉素 C (1) 的第一次完全不对称合成和绝对构型的归属。该化合物是从对映纯的三羰基(二烯醛)铁络合物 (+)-4 分六步制备的,该络合物很容易通过分离预先形成的非对映异构体而获得,从苯基戊二烯酸和 (S)-扁桃酸甲酯开始。
Total synthesis of (+)-dienomycin C was achieved via Sharpless asymmetric epoxidation. Pd-catalyzed hydrogenolysis with formic salt, and Pd(II)-catalyzed cyclization of urethane. (C) 2010 Elsevier Ltd. All rights reserved.
Asymmetric synthesis of dienomycin C
作者:Daniel L. Comins、Gary M. Green
DOI:10.1016/s0040-4039(98)02273-4
日期:1999.1
The first asymmetric synthesis of dienomycin C was accomplished in seven steps and 46% overall yield. (C) 1998 Elsevier Science Ltd. All rights reserved.