Nine new cyclodepsipeptides, homophymines BâE (2â5) and A1âE1 (1aâ5a), were isolated from the polar extracts of the sponge Homophymia sp. The new structures, featuring new polyketide-derived end groups, were determined by interpretation of NMR and MS data. The configurations of the new end groups was secured by the application of J-based configurational analysis. Homophymines displayed very potent antiproliferative activity (IC50 in the nM range) against a panel of human cancer cell lines.
从海绵藻(Homophymia sp)的极性
提取物中分离出了九种新的环表肽类化合物,即同胞藻素BâE(2â5)和A1âE1(1aâ5a)。新端基的构型是通过基于 J 的构型分析确定的。高ophymines 对一组人类癌细胞株显示出非常强的抗增殖活性(IC50 在 nM 范围内)。