作者:Isabelle Bonnard、Marc Rolland、Jean-Marie Salmon、Eric Debiton、Chantal Barthomeuf、Bernard Banaigs
DOI:10.1021/jm061307x
日期:2007.3.1
From a mixed assemblage of Lyngbya majuscula rich marine cyanobacteria, we isolated a series of cell growth inhibitory cyclic peptides. The structures of the two major components, laxaphycins A (1) and B (2), and of two minor peptides, laxaphycins B2 (3) and B3 (4), were determined by spectroscopic methods and degradative analysis. Absolute configurations of natural and nonproteinogenic amino acids
我们从富含Lyngbya majuscula的海洋蓝细菌的混合组合中分离了一系列细胞生长抑制性环肽。通过光谱方法和降解分析确定了两种主要成分拉沙霉素A(1)和B(2)以及两种次要肽拉沙霉素B2(3)和B3(4)的结构。天然和非蛋白质氨基酸的绝对构型是通过水解,非商业残基合成,化学衍生和HPLC分析的组合来确定的。产生laxaphycins的生物被鉴定为蓝藻鱼腥藻。在一组固态和淋巴母细胞癌细胞上研究了拉沙霉素的抗增殖活性。我们的结果表明,与拉沙霉素A相比,