Carmabins A and B, New Lipopeptides from the Caribbean Cyanobacterium Lyngbya majuscula

Abstract
Carmabins A and B have been isolated as linear lipotetrapeptides from the BuOH extract of the marine cyanobacterium Lyngbya majuscula. The planar structures were elucidated by extensive 2D NMR analysis, including 1H−15N HMBC and HMQC−TOCSY experiments, together with MS measurements.