Enantioselective synthesis of (3R,6S,7R,18R,19S)-, (3R,6S,7R,18R,19R)-, and (3R,6S,7R,18S,19R)-Quassiols A. A comment on the stereochemistry of natural quassiol A
作者:Mitsuaki Kodama、Suzuyo Yoshio、Tomoki Tabata、Yuka Deguchi、Yasumi Sekiya、Yoshiyasu Fukuyama
DOI:10.1016/s0040-4039(97)00992-1
日期:1997.6
(3R,6S,7R,18R,19S)-, (3R,6S,7R,18R,19R)-, and (3R,6S,7R,18S,19R)- Quassiols A were synthesized enantioselectively by using baker's yeast reduction and asymmetric dihydroxylation, but their optical properties were not identical to that of natural quassiol A. Stereostructure of natural quassiol A was proposed. (C) 1997 Elsevier Science Ltd.
(3R,6S,7R,18R,19S)-、(3R,6S,7R,18R,19R)-和(3R,6S,7R,18S,19R)-型的Quassiols A通过使用面包酵母还原和不对称二羟基化反应被高对映选择性地合成,但它们的光学性质与天然quassiol A并不相同。天然quassiol A的立体结构已被提出。(C) 1997 Elsevier Science Ltd.