A Concise Stereoselective Total Synthesis of Synargentolide A from 3,4,6-Tri-O-acetyl-d-glucal
作者:Gowravaram Sabitha、S. Reddy、Atla Raju、Jhillu Yadav
DOI:10.1055/s-0030-1258458
日期:2011.4
highly stereoselective synthesis of the naturally occurring, α,β-unsaturated lactone synargentolide A is described from the chiral starting material 3,4,6-tri-O-acetyl-d-glucal. Key steps of the synthesis are lactol opening, Brown’s asymmetric allylation, and a ring-closing metathesis (RCM) reaction. 3,4,6-tri-O-acetyl-d-glucal - δ-lactones - synargentolide - Brown’s allylation - RCM
天然存在的,α,β不饱和内酯synargentolide A的短且高立体选择性合成,从手性起始材料描述3,4,6-三ö乙酰基d -glucal。合成的关键步骤是乳糖醇开环,布朗的不对称烯丙基化和闭环复分解(RCM)反应。 3,4,6-三Ø乙酰基d -glucal - δ内酯- synargentolide -布朗的烯丙基- RCM