作者:Gebhard Haberhauer、Frank Rominger
DOI:10.1002/ejoc.200300207
日期:2003.8
The syntheses of the cyclic peptides 3−7, which contain imidazole units in their backbones and resemble naturally occurring marine cyclopeptides such as westiellamide and ascidiacyclamide, are described. Structural investigations on the trimer 3 reveal a molecular triangle conformation with all lone pairs of the imidazole nitrogen atoms and the hydrogen atoms of the secondary amides directed to the
描述了环肽 3-7 的合成,其主链中含有咪唑单元,类似于天然存在的海洋环肽,如韦斯特酰胺和 ascidiacyclamide。对三聚体 3 的结构研究揭示了分子三角形构象,所有孤对咪唑氮原子和仲酰胺的氢原子都指向大环的中心。四聚体 4 和 6 的结构显示出扭曲的分子方形构象,杂环 (4) 和 αCH 基团 (6) 分别位于矩形的角上。(© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2003)