作者:Elias A. Couladouros、Emmanuel A. Bouzas、Alexandros D. Magos
DOI:10.1016/j.tet.2006.01.106
日期:2006.5
An alternative strategy towards Abyssomicin C (1) is described. The key ene-diene intermediate is synthesized via a Kishi type coupling of an E/Z mixture of triene-iodide 7 and a suitably functionalized derivative of 2,4-dimethylglutaric acid. A final in situ isomerization/intramolecular Diels–Alder cyclization resulted in the formation of the known intermediate 3 as a single isomer in high yield.
描述了一种针对阿霉素C(1)的替代策略。关键的烯-二烯中间体通过三烯-碘化物7的E / Z混合物与2,4-二甲基戊二酸的适当官能化的衍生物的Kishi型偶联合成。最终的原位异构化/分子内Diels-Alder环化反应导致高产率地形成了已知的中间体3,为单一异构体。使用过量的碘进一步加热3,得到碘衍生物23,其具有阿霉素D的整个碳骨架。