Studies directed toward the total synthesis of 14-membered cyclopeptide alkaloids: Synthesis of a cyclic precursor to nummularine-F
作者:Robert J. Heffner、Madeleine M. Joullié
DOI:10.1016/s0040-4039(01)93413-6
日期:——
A highly strained 14-membered para-ansa cyclopeptide, a potential precursor of the cyclopeptide alkaloid, nummularine-F, was made by cyclization of a pentafluorophenyl ester under catalytic hydrogenation conditions. This cyclization and the stereoselective synthesis of the acyclic activated ester from D-serine, are presented.
通过在催化氢化条件下将五氟苯基酯环化,制备了高度紧张的14元对氨基苯甲酸环肽,这是环肽生物碱nummularine-F的潜在前体。提出了从D-丝氨酸的无环活化酯的这种环化和立体选择性合成。