Diastereoselective Total Synthesis of Isocarbacyclin from <scp>l</scp>-Ascorbic Acid
作者:Teruhiko Ishikawa、Hirokazu Ishii、Kazuo Shimizu、Hiroe Nakao、Jin Urano、Takayuki Kudo、Seiki Saito
DOI:10.1021/jo048738c
日期:2004.11.1
Diastereoselective total synthesis of isocarbacyclin, which features a fused bicyclic key intermediate available from l-ascorbic acid, is described. The key intermediate was prepared in multigram quantities by the Pauson−Khand reaction of l-ascorbic acid-based (R)-4,4-diallyl-2,2-dimethyl-5-(trimethylsilyl)ethynyl-1,3-dioxolane (3), discriminating diastereotopic groups and faces of the geminal allyl
描述了异卡巴环素的非对映选择性全合成,其特征在于可从1-抗坏血酸获得的稠合双环关键中间体。通过基于1-抗坏血酸的(R)-4,4-二烯丙基-2,2-二甲基-5-(三甲基甲硅烷基)乙炔基-1,3-二氧戊环(3),区分非对位基团和双生的烯丙基取代基的面。