Total Synthesis of Cytospolide D and Its Biomimetic Conversion to Cytospolides M, O, and Q
作者:Gunnar Ehrlich、Christian B. W. Stark
DOI:10.1021/acs.orglett.6b02193
日期:2016.10.7
A total synthesis of cytospolide D, starting from l-glutamic acid, is described. The critical macrolactonization to the 10-membered lactone containing an (E)-configured double bond was successfully achieved by Shiina esterification. Conversion of cytospolide D to its bicyclic derivatives M, O, and Q was accomplished under mild conditions, lending support to the proposed biosynthetic hypothesis.
描述了从1-谷氨酸开始的胞嘧啶D的全合成。通过Shiina酯化成功地实现了对包含(E)-构型双键的10元内酯的关键大内酯化。胞嘧啶D向其双环衍生物M,O和Q的转化在温和条件下完成,这为提出的生物合成假说提供了支持。