Amphimic acids and related long-chain fatty acids as DNA topoisomerase I inhibitors from an Australian sponge, Amphimedon sp.: Isolation, structure, synthesis, and biological evaluation
作者:Takayuki Nemoto、Go Yoshino、Makoto Ojika、Youji Sakagami
DOI:10.1016/s0040-4020(97)10099-0
日期:1997.12
fatty acids have been isolated from an Australian sponge, Amphimedon sp., as human DNA topoisomerase I inhibitors. Three of them, amphimic acids A (1)-C (3), are unusual fatty acids possessing a cyclopropylidene group, and one is a new C30 fatty acid 4. Their structures were elucidated by spectroscopic analysis and chemical degradation. The enantioselective synthesis of 1 was carried out to determine
从澳大利亚海绵Amphimedon sp。中分离出了几种C 27 – C 30不饱和脂肪酸,作为人类DNA拓扑异构酶I抑制剂。其中三个,两性酸A(1)-C(3),是具有环亚丙基的不常见脂肪酸,一个是新的C 30脂肪酸4。通过光谱分析和化学降解阐明了它们的结构。进行1的对映选择性合成以确定两性酸的绝对构型。对这些天然产物和合成衍生物评估了DNA拓扑异构酶I的抑制活性。