Stereoselective synthesis of a chiral synthon, 2,2,5-trisubstituted tetrahydropyran, based on simultaneous 1,3- and 1,6-asymmetric induction via nucleophilic acetal cleavage reaction of the bicyclic acetal: a total synthesis of (−)-malyngolide
作者:Naoyoshi Maezaki、Yûki Matsumori、Takeshi Shogaki、Motohiro Soejima、Tetsuaki Tanaka、Hirofumi Ohishi、Chuzo Iwata
DOI:10.1039/a703242k
日期:——
A chiral 2,2,5-trisubstituted tetrahydropyran is synthesised
efficiently via facial and group selective nucleophilic acetal
cleavage reaction of a bicyclic acetal, wherein simultaneous 1,3- and
1,6-asymmetric induction from a sulfinyl chirality is accomplished with
high diastereoselectivity; this chiral synthon is successfully applied to
a total synthesis of (-)-malyngolide.
通过双环乙缩醛的面部和基团选择性亲核乙缩醛裂解反应,高效合成了手性 2,2,5- 三取代四氢吡喃,其中同时以高非对映选择性实现了来自亚磺酰手性的 1,3- 和 1,6- 不对称诱导;这一手性合成物被成功应用于 (-)-malyngolide 的全合成。