Microsclerodermins C - E, antifungal cyclic peptides from the lithistid marine sponges Theonella sp. and Microscleroderma sp.
作者:Eric W. Schmidt、D. John Faulkner
DOI:10.1016/s0040-4020(98)00054-4
日期:1998.3
Three new cyclic peptides, microsclerodermins C - E (3–5), were isolated from two species of lithistid spongesfrom the Visayan Islands, Philippines. The spongeTheonellasp. contained peptides 3 and 4, while Microscleroderma sp. contained peptides 4 and 5. Their structures, which feature three unprecedented amino acids, were elucidated using spectroscopic methods and chemical degradation.