Highly Stereoselective Synthesis and Structural Confirmation of a Fungal Metabolite, LL-P880.BETA..
作者:Yukio MASAKI、Toshihiro IMAEDA、Makoto KAWAI
DOI:10.1248/cpb.42.179
日期:——
A fungal metabolite, LL-P880β [6S-(1'S, 2'R-dihydroxypentyl)-4-methoxy-5, 6-dihydropyran-2-one] (1), was synthesized unambiguously from diethyl (R, R)-tartrate (3) as a chiral pool via highly stereoselective construction of the C7'-asymmetric carbon of the intermediate 6, 8-dioxabicyclo[3.2.1]octane derivative (8a), and the stereochemistry of the C6-chiral center of the metabolite was chemically confirmed as (S).
一种真菌代谢物LL-P880β [6S-(1'S, 2'R-二羟基戊基)-4-甲氧基-5, 6-二氢吡喃-2-酮] (1) 是从手性池中的二乙基 (R, R)-酒石酸 (3) 明确合成的,通过高度立体选择性地构建中间体6, 8-二氧杂双环[3.2.1]辛烷衍生物 (8a) 的C7'-不对称碳,并且代谢物的C6-手性中心的立体化学被化学确认为 (S)。