Kahalalides: Bioactive Peptides from a Marine Mollusk Elysia rufescens and Its Algal Diet Bryopsis sp.(1)

Mark T. Hamann; Clifton S. Otto; Paul J. Scheuer; D. Chuck Dunbar

doi:10.1021/jo960877+

Kahalalides: Bioactive Peptides from a Marine Mollusk Elysia rufescens and Its Algal Diet Bryopsis sp.(1)

J Org Chem. 1996 Sep 20;61(19):6594-6600. doi: 10.1021/jo960877+.

Authors

Mark T. Hamann¹, Clifton S. Otto, Paul J. Scheuer, D. Chuck Dunbar

Affiliation

¹ Department of Pharmacognosy, School of Pharmacy, The University of Mississippi, University, Mississippi 38677.

PMID: 11667527
DOI: 10.1021/jo960877+

Abstract

In addition to the previously reported bioactive kahalalide F six new peptides are described. Six of these, including kahalalide F, are cyclic depsipeptides, ranging from a C(31) tripeptide to a C(75) tridecapeptide isolated from a sacoglossan mollusk, Elysiarufescens. The mollusk feeds on a green alga, Bryopsis sp., which has also been shown to elaborate some of these peptides in smaller yields, in addition to an acyclic analog of F, kahalalide G. The bioassay results of antitumor, antiviral, antimalarial, and OI (activity against AIDS opportunistic infections) tests are reported.