作者:Michael T. Crimmins、Hamish S. Christie、Alan Long、Kleem Chaudhary
DOI:10.1021/ol802829n
日期:2009.2.19
A highly convergent, enantioselective totalsynthesis of the potent antitumor agent apoptolidin A has been completed. The key transformations include highly selective glycosylations to attach the C27 disaccharide and the C9 6′-deoxy-l-glucose, a cross-metathesis to incorporate the C1−C10 trienoate unit, and a Yamaguchi macrolactonization to complete the macrocycle. Twelve stereocenters in the polypropionate
强效抗肿瘤剂 apoptolidin A 的高度收敛、对映选择性全合成已经完成。关键的转化包括高选择性糖基化以连接 C27 二糖和 C9 6'-脱氧-l-葡萄糖、交叉复分解以合并 C1−C10 三烯酸单元,以及山口大内酯化以完成大环。通过非对映选择性氯钛烯醇醇醛缩合反应在聚丙酸酯片段和糖单元中建立了十二个立体中心。