Mollamides B and C, Cyclic Hexapeptides from the Indonesian Tunicate Didemnum molle

Autor: S. Donia, Marwa, Wang, Bin, C. Dunbar, Daniel, V. Desai, Prashant, Patny, Akshay, Avery, Mitchell, T. Hamann, Mark
Zdroj: Journal of Natural Products; May 2008, Vol. 71 Issue: 6 p941-945, 5p
Abstrakt: Two new cyclic hexapeptides, mollamides B ( 1) and C ( 2), were isolated from the Indonesian tunicate Didemnum mollealong with the known peptide keenamide A ( 3). The structures were established using 1D and 2D NMR experiments. The relative configuration of mollamide B at the thiazoline moiety was determined using molecular modeling coupled with NMR-derived restraints. Their absolute configuration was determined using Marfeyʼs method. The new peptides have been evaluated for their antimicrobial, antimalarial, anticancer, anti-HIV-1, anti-Mtb, and anti-inflammatory activities. Keenamide A and mollamide B show cytotoxicity against several cancer cell lines.
Databáze: Supplemental Index