Structural studies on glycolipid of shellfish. II. Occurrence of 3-O-methylgalactosamine in oyster glycolipid.
3-O-Methyl hexosamine was found for the first time and characterized as one of the sugar components of oyster glycolipid. The alditol acetate of this sugar was identified as 3-O-methyl-N-acetylgalactosaminitol acetate by comparing its retention time on gas chromatography and mass spectrum with those of the authentic sample synthesized in this laboratory. The new sugar, 3-O-methylgalactosamine, occupied the non-reducing terminal position of the carbohydrate moiety of the lipid and was linked to the penultimate hexose by a (1 leads to 3) bond.
D000818:Animals; D005688:Galactosamine / Q000031:analogs & derivatives* / Q000032:analysis; D006017:Glycolipids / Q000032:analysis*; D013058:Mass Spectrometry; D010125:Ostreidae / Q000032:analysis*
C017513:3-O-methylgalactosamine; D006017:Glycolipids; D005688:Galactosamine