作者:Richard J Davenport、Andrew C Regan
DOI:10.1016/s0040-4039(00)01337-x
日期:2000.9
A C1–C9 fragment of the antitumour macrolide rhizoxin has been synthesised. An Evans’ asymmetric aldol reaction was used to set up the first two chiral centres, and an α,β-unsaturated δ-lactone was then formed on the acyclic system by an intramolecular Wadsworth–Emmons reaction. Stereoselective hydrogenation was used to set up the cis relative stereochemistry in the saturated δ-lactone ring.
合成了抗肿瘤大环内酯根霉毒素的C1-C9片段。埃文斯的不对称羟醛反应用于建立前两个手性中心,然后通过分子内Wadsworth-Emmons反应在无环体系上形成α,β-不饱和δ-内酯。使用立体选择性氢化在饱和δ-内酯环中建立顺式相对立体化学。