Synthesis and biological activities of the marine bryozoan alkaloids convolutamines A, C and F, and lutamides A and C
作者:Hirofumi Hashima、Masahiko Hayashi、Yoshiaki Kamano、Nobuhiro Sato
DOI:10.1016/s0968-0896(00)00110-3
日期:2000.7
Synthesis of convolutamines and lutamides, new 2,4,6-tribromo-3-methoxyphenethylamine alkaloids isolated from Floridian marine bryozoan Amathia convoluta, was accomplished by a sequence of reactions starting from 3-hydroxy-phenethylamines. Cytotoxities of the synthetic lutamides, convolutamines and their de-O-methyl derivatives were examined using drug-sensitive and -resistant P388 as well as KB cell lines. The bioassay suggests that the 2,4,6-tribromo-3-methoxyphenethylamine is an indispensable unit Tor detection of the activities. Additionally, a reversal of drug resistance by those alkaloids is recognized. (C) 2000 Elsevier Science Ltd. All rights reserved.