作者:Cheng Sheng Ge、Stéphane Hourcade、Antoine Ferdenzi、Angèle Chiaroni、Stéphane Mons、Bernard Delpech、Christian Marazano
DOI:10.1002/ejoc.200600293
日期:2006.9
An approach to the polycyclic core of sarain A, based upon a proposed biogenetic route, is presented. Condensation of a protected amino acid with a bromoacrylamide and subsequent addition of malonaldehyde sodium salt and methyl iodide afforded, after stereoselective hydrogenation, a highly functionalized diazabicyclo[4.3.0]nonane system 16. This intermediate possesses the stereochemistry required for
提出了一种基于提议的生物遗传路线的 sarain A 多环核心的方法。受保护的氨基酸与溴丙烯酰胺缩合,随后加入丙二醛钠盐和碘甲烷,在立体选择性氢化后,得到高度官能化的二氮杂双环 [4.3.0] 壬烷系统 16。该中间体具有合成核心所需的立体化学sarain A 的骨架,其中 (31) 的模型是通过 Weinreb 及其同事先前描述的烯丙基硅烷策略获得的。(© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2006)