Cyclopeptide alkaloids. Synthesis of the ring system and its ion affinity
作者:J. Clark Lagarias、Richard A. Houghten、Henry Rapoport
DOI:10.1021/ja00494a030
日期:1978.12
Several examples of the 14-membered, para-bridged ring system of the cyclopeptide alkaloids have been synthesized via an active ester cyclization. The yield of monomeric cyclopeptide varied from 1 to 33% and was affected by the amino acid substitution pattern and amide conformation of the linear peptide precursors. Both the synthetic models and a naturally occurring cyclopeptide alkaloid, ceanothine B, bind
已经通过活性酯环化合成了环肽生物碱的 14 元对位桥环系统的几个例子。单体环肽的产量从 1% 到 33% 不等,并受线性肽前体的氨基酸取代模式和酰胺构象的影响。合成模型和天然存在的环肽生物碱,ceanothine B,结合一价 (Li/sup +/) 和二价 (Ca/sup 2 +/, Mg/sup 2 +/) 阳离子。4个数字,1个表格。