Synthesis and biological evaluation of analogues of the marine cyclic depsipeptide obyanamide
作者:Wei Zhang、Ning Ding、Yingxia Li
DOI:10.1002/psc.1361
日期:2011.7
to the results, the β‐amino acid residue was found to play a critical role in the biological activities. Additionally, the ester bond along with the Ala(Thz) moiety was also essential for biological activities. However, it seems too early to draw a conclusion that the N‐methylation of Val/Phe can lead to higher or lower cytotoxic activities. Copyright © 2011 European Peptide Society and John Wiley
在奥巴酰胺的总合成的基础上,通过以下方法合成了该海洋环状双缩肽的20个类似物:(i)使用Z / OtBu方案在西半球中制备三肽片段;(ii)使用Boc / OMe方案在东半球制备二肽片段;(iii)在最后一步中偶联片段,除去保护基团(Boc和OtBu,在一个锅中),以及大环化。细胞毒性测试表明,三种合成化合物对HL-60,KB,LOVO和A549细胞系表现出中等活性。根据结果,发现β-氨基酸残基在生物活性中起关键作用。此外,酯键以及Ala(Thz)部分对于生物活性也是必不可少的。但是,现在得出结论认为Val / Phe的N-甲基化可导致更高或更低的细胞毒活性。版权所有©2011欧洲肽协会和John Wiley&Sons,Ltd.。