作者:BoShen Wu、Aurélie Mallinger、Jeremy Robertson
DOI:10.1021/ol100906k
日期:2010.6.18
Two new routes to the C(1−10) carboxylic acid core of taurospongin A are presented. In the first route, overall asymmetric hydration of a C(2)−C(3) alkene is achieved by Sharpless AD and selective deoxygenation at C(2); in the second route, the C(3) stereogenic center is set by Tietze asymmetric allylation. A short synthesis of the C(1′−25′) fatty acid combines with the product from the first route
提出了两种通往牛磺pongin A的C(1-10)羧酸核心的新途径。在第一种途径中,通过Sharpless AD和在C(2)处选择性脱氧来实现C(2)-C(3)烯烃的整体不对称水合;在第二种途径中,C(3)立体异构中心是由Tietze不对称烯丙基化设置的。C(1'-25')脂肪酸的简短合成与第一种路线的产物结合在一起,完成牛磺pongin A的全部合成。