Glycosyl Glycerides from Streptococcus hemolyticus Strain D-58

Abstract

The chloroform-methanol extract from Streptococcus hemolyticus strain D-58 cells contained about 50% by weight of glycosyl glycerides, which were purified on silicic acid columns. Structures were proposed for three of them as α-kojibiosyl-(1→3)- and α-kojitriosyl-(1→3)-diglycerides, as well as a di-O-acyl derivative of α-kojibiosyl-(1→1)-glycerylphosphoryl-1'-glycerol. The deacylation product of a less polar fraction of the lipid contained at least two compounds, one of which was identified as α-glucosyl-(1→1)-glycerol. Possible existence of N-acetylglucosaminyl and N-acetylgalactosaminyl diglycerides was also demonstrated.