作者:Nobutoshi Murakami、Weiqi Wang、Naoki Ohyabu、Takeshi Ito、Satoru Tamura、Shunji Aoki、Motomasa Kobayashi、Isao Kitagawa
DOI:10.1016/s0040-4020(00)00766-3
日期:2000.11
In order to probe the metabolism of arenastatin A, a potent cytotoxic depsipeptide from the marine sponge Dysidea arenaria, we synthesized three analogs in which the ester linkages were replaced by amide bonds. Triamide analog-II and tetraamide analog, both of which contained a 15,20-amide linkage, showed stability in serum. However, arenastatin A and triamide analog-I, which both contained a 15,20-ester moiety, were readily metabolized in serum. Among the three amide analogs, only triamide analog-II exhibited potent cytotoxic activity against KB cells. (C) 2000 Elsevier Science Ltd. All rights reserved.