Structure of 2',3'-di-O-acyl-alpha-D-glucopyranosyl-(1 leads to 2)-D-glyceric acid, a new glycolipid from Nocardia caviae.
The structure of a new glycolipid isolated from the acetone-soluble lipids of the strain of Nocardia caviae has been determined. The water-soluble moiety contains one mole of D-glucose and one mole of D(-)-glyceric acid; the lipid moiety is a mixture of myristic, palmitic and stearic acids with small amounts of oleic acid. The structure of the deacylated compound was determined by periodate oxidation, methylation and enzymatic degradation. The localization of fatty acid residues at 2',3' on glucose was established by methylation and mass spectrometry. The structure was confirmed by 13C NMR spectrometry of the glycolipid and of the deacylated compound. This glycolipid is a 2'.3'-di-O-acyl-alpha-D-glucopyranosyl-(1 leads to 2)-D-(-)-glyceric acid.
D055598:Chemical Phenomena; D002621:Chemistry; D005227:Fatty Acids / Q000032:analysis; D005947:Glucose / Q000032:analysis; D005988:Glyceric Acids / Q000032:analysis; D006017:Glycolipids / Q000032:analysis*; D009682:Magnetic Resonance Spectroscopy; D009615:Nocardia / Q000032:analysis*; D012995:Solubility
D005227:Fatty Acids; D005988:Glyceric Acids; D006017:Glycolipids; D005947:Glucose