Studies on the Synthesis of Pectenotoxin II: Synthesis of a C(11)−C(26) Fragment Precursor via [3 + 2]-Annulation Reactions of Chiral Allylsilanes
作者:Glenn C. Micalizio、William R. Roush
DOI:10.1021/ol0160250
日期:2001.6.1
[see reaction]. A synthesis of tetracycle 2 corresponding to the C(11)-C(26) fragment of pectenotoxin II is described. The synthesis features two highly stereoselective [3 + 2]-annulation reactions of chiral allylsilanes, generated via allylboration of aldehydes with the chiral gamma-silylallylborane 4 or the gamma-silylallylboronate 19, for construction of the highly substituted C and E rings.
[请参阅反应]。描述了相应于果胶毒素II的C(11)-C(26)片段的四环2的合成。该合成具有两个高度立体选择性的[3 + 2]手性烯丙基硅烷环化反应,该反应是通过醛与手性γ-甲硅烷基烯丙基硼烷4或γ-甲硅烷基烯丙基硼酸酯19进行烯丙基硼化反应而生成的,用于构建高度取代的C和E环。