Studies on Glycolipids. VI. New Acyl-Distributed Glyceroglycolipids from the Nitrogen-Fixing Cyanobacterium Anabaena flos-aquae f. flos-aquae.

Abstract

Two unprecedented acyl-distributed glyceroglycolipids have been isolated from the nitrogen-fixing cyanobacterium Anabaena flos-aquae f. flos-aquae. The structures were determined as (2'S)-3', 6-O-diacyl-glyceryl β-D-galactopyranoside (1) and (2'R)-2', 6-O-diacyl-glyceryl β-D-galactopyranoside (2) on the basis of physicochemical evidence. The positional distribution of fatty acid residues was elucidated by enzymatic hydrolysis using Rhizopus arrhizus lipase.