Facile chelation-controlled reductive opening of methoxybenzylidene acetals with Bu3SnH and MgBr2. Regioselective protection strategy as MPM ethers
作者:Bao-Zhong Zheng、Megumi Yamauchi、Hiroo Dei、Shin-ichi Kusaka、Katsuya Matsui、Osamu Yonemitsu
DOI:10.1016/s0040-4039(00)01017-0
日期:2000.8
A mild and efficient regioselective reductive opening of methoxybenzylidene acetals using a combination of Bu3SnH and MgBr2. OEt2, mainly via five-membered chelation intermediates is described. This reaction was applied to synthetic intermediates of myriaporon and tedanolide. (C) 2000 Elsevier Science Ltd. All rights reserved.