作者:Joseph C. Grim、Kathleen C. A. Garber、Laura L. Kiessling
DOI:10.1021/ol201252x
日期:2011.8.5
A divergent synthesis of (−)-4-epi-shikimic acid was developed. This route features a one-pot zinc-mediated reductive ring opening of an arabinofuranose followed by a Barbier reaction and culminates in a ring-closing metathesis. Functionalization of (−)-4-epi-shikimic acid via conjugate addition of a thiol occurs in high diastereoselectivity to afford a product with the features of fucosylated glycans
开发了(-)-4-表-莽草酸的发散合成。该路线的特点是一锅锌介导的阿拉伯呋喃糖还原开环,然后是巴比耶反应,最后是闭环复分解。(-)-4-表-莽草酸通过硫醇的共轭加成以高非对映选择性进行官能化,以提供具有岩藻糖基化聚糖特征的产物。