Revised structure and structure–activity relationship of bisebromoamide and structure of norbisebromoamide from the marine cyanobacterium Lyngbya sp.
作者:Hiroaki Sasaki、Toshiaki Teruya、Hidesuke Fukazawa、Kiyotake Suenaga
DOI:10.1016/j.tet.2010.11.106
日期:2011.2
sp. The planar structure of these peptides was elucidated through the extensive application of 1D and 2D NMR techniques. The absolute stereostructure of 1 was determined by chemical degradation followed by chiral HPLC analysis. Recently, Tao and co-workers achieved synthesis of bisebromoamide, and the configuration of thiazoline moiety was revised. We re-investigated the stereochemistry of thiazoline
从海洋蓝藻Lyngbya sp。中分离到了新的强大的细胞毒性肽比斯溴酰胺(1)和诺溴溴酰胺(2)。这些肽的平面结构通过1D和2D NMR技术的广泛应用得以阐明。的绝对立体1用化学降解,然后通过手性HPLC分析测定的。最近,Tao和他的同事实现了比色溴酰胺的合成,并修改了噻唑啉部分的构型。我们重新研究了1的噻唑啉部分的立体化学。比西溴酰胺的结构-活性关系(1)使用天然和合成类似物进行了研究。此外,双歧溴酰胺(1)可以有效抑制蛋白激酶:用10–0.1μM的1处理可以选择性地抑制PDGF刺激NRK细胞中ERK的磷酸化。