Total Synthesis and Configurational Assignment of the Marine Natural Product Haliclamide
作者:Bernhard Pfeiffer、Sandra Speck-Gisler、Luzi Barandun、Ursula Senft、Claire de Groot、Irène Lehmann、Walter Ganci、Jürg Gertsch、Karl-Heinz Altmann
DOI:10.1021/jo3027643
日期:2013.3.15
stereoisomers with literature data for the natural product, the configuration of the previously unassigned stereocenters at C9 and C20 of haliclamide could be determined to be S for both carbons. The absolute configuration of haliclamide thus is 2S, 9S, 14R, 20S. The antiproliferative activity of synthetic haliclamide against several human cancer cell lines was found to be in the high μM range. The
在环化的基础上,通过闭环烯烃复分解合成了海洋天然产物卤代酰胺。使用用于组装二烯前体以进行复分解反应的四个结构单元中的两个的任一种的对映异构体,还制备了卤代酰胺的三种非天然异构体。根据各个立体异构体的1 H和13 C NMR光谱与天然产物的文献数据进行比较,可以确定先前未分配的卤代酰胺的C9和C20立体中心的构型对于两个碳都是S。因此,卤代酰胺的绝对构型为2 S,9 S,14 R,20 S。发现合成的哈利酰胺对几种人癌细胞系的抗增殖活性处于高μM范围内。该化合物没有抗真菌或抗生素活性。