Asymmetric synthesis and biological activities of natural product (+)-balasubramide and its derivatives
作者:Jun Li、Jianzu Li、Yuan Xu、Yunjie Wang、Luyong Zhang、Li Ding、Yining Xuan、Tao Pang、Hansen Lin
DOI:10.1080/14786419.2015.1071363
日期:2016.4.2
The natural product (+)-balasubramide (3j) and itsderivatives (3a–3i) were synthesized using a two-step asymmetric synthesis, and the biological activities of 3a–3j were determined in vitro. Methyl (2S,3R)-(+)-3-phenyloxirane-2-carboxylate (1h), the asymmetric synthesis of which was described in a previous paper, was selected as the starting material. Compounds 3a–3j were evaluated for their neuroprotective
Highly efficient asymmetric synthesis of α,β-epoxy esters via one-pot organocatalytic epoxidation and oxidative esterification
作者:Yi-ning Xuan、Han-Sen Lin、Ming Yan
DOI:10.1039/c3ob00056g
日期:——
Highly enantioselective synthesis of α,β-epoxy esters was achieved via one-pot organocatalytic epoxidation and consequent oxidative esterification. Excellent enantioselectivities (up to 99% ee) and good yields were obtained for a variety of α,β-epoxy esters. The method was readily scaled. Furthermore the product was applied towards the synthesis of (−)-clausenamide with excellent enantioselectivities