In this study, etherification of ginkgolide B and dimethylaminoethyl chloride hydrochloride was investigated as a model reaction in a micro-flow system (MFS), providing the resulting ethers in high yield with fewer side effects. Meanwhile, this novel process in MFS worked well for other ginkgolides from Ginkgol biloba and halides, giving moderate yields. (C) 2016 Chinese Chemical Society and Institute of Materia Medica, Chinese Academy of Medical Sciences. Published by Elsevier B.V. All rights reserved.
A Concise Synthesis of Ginkgolide M, a Minor Component of a Terpene Trilactone Fraction from <i>Ginkgo </i><i>b</i><i>iloba</i> Roots
作者:Sergei Bolshakov、Sergei V. Dzyuba、John Decatur、Koji Nakanishi
DOI:10.1021/np050403i
日期:2006.3.1
Ginkgolide M (GM), which is found only in the roots of the Ginkgo biloba tree and is an inhibitor of ligand-operated ion channels in the central nervous system, has been prepared in three steps from 10-benzylginkgolide C, an intermediate generated during the isolation and separation of ginkgolides from Ginkgo biloba leaf extract. The described synthetic sequence can be applied to access GM derivatives for biological studies.