A Short, Catalytic, Asymmetric Synthesis of Diospongins A and B by a One-Pot, Sequential Hetero-Diels-Alder/Mukaiyama-Michael Reaction Process
作者:Masahiro Anada、Takuya Washio、Yudai Watanabe、Koji Takeda、Shunichi Hashimoto
DOI:10.1002/ejoc.201001125
日期:2010.12
developed. The key step is a novel, one-pot, sequential dirhodium(II) tetrakis[(S)-3-(benzo-fused phthalimido)-2-piperidinonate] [Rh 2 (S-BPTPI) 4 ] catalyzed enantioselective hetero-Diels-Alder/TMSOTf-catalyzed Mukaiyama-Michael reaction process. The sign of the optical rotation of natural diospongin B was determined to be (+) and not (-) as was originally reported.
开发了制备二芳基庚烷类二海绵素 A 和 B 的新途径。关键步骤是一种新型的、单锅、连续的二铑 (II) 四[(S)-3-(苯并稠合邻苯二甲酰亚胺)-2-哌啶] [Rh 2 (S-BPTPI) 4 ] 催化的对映选择性杂-Diels -Alder/TMSOTf 催化的 Mukaiyama-Michael 反应过程。天然 diospongin B 的旋光度符号被确定为 (+) 而不是最初报道的 (-)。