出版社:American Society for Biochemistry and Molecular Biology
摘要:Glucosylsphingosine has been isolated for the first time as a natural constituent from Gaucher's spleen. On thinlayer chromatography, it migrates with authentic glucosylsphingosine, yielding a positive color reaction with ninhydrin for the amino group and with α-naphthol–sulfuric acid for the carbohydrate residue. N -Acylation with palmitic acid gave rise to glucosylceramide, which was cleaved by purified glucosylceramide: β-glucosidase to ceramide. Gas–liquid chromatography of the trimethylsilyl derivative showed a retention time similar to authentic glucosylsphingosine. Gas–liquid chromatographic analysis of the trimethylsilyl derivatives after methanolysis revealed the presence of only glucose and C18-sphingosine. Mass spectral data further supported the structural identity with glucosylsphingosine.