Concise epoxide-based synthesis of the C14–C25 bafilomycin A1 polypropionate chain
作者:Elizabeth M. Valentín、Marlenne Mulero、José A. Prieto
DOI:10.1016/j.tetlet.2012.02.067
日期:2012.4
An efficient nonaldol convergent synthesis of the C14–C25 polyketide fragment of bafilomycin A1 was completed in 16% overall yield and 8 steps in its longest linear sequence. This synthesis highlights the formation of the key fragments using a three-step sequence of epoxide cleavage, alkyne reduction, and epoxidation developed in our laboratory; starting from suitably protected enantiomeric epoxides
bafilomycin A 1的 C14-C25 聚酮化合物片段的高效壬醛聚合合成以 16% 的总产率和最长线性序列的 8 个步骤完成。该合成使用我们实验室开发的环氧化物裂解、炔烃还原和环氧化的三步序列突出了关键片段的形成;从适当保护的反式-2,3-环氧丁醇的对映体环氧化物开始。这种化学反应代表了巴弗洛霉素 A 1聚酮链的快速不对称和非对映选择性构建,其中每个立体中心都是仅使用环氧化物化学构建的。