| 摘要 |
A process for producing a glycolipid ester represented by the formula, <IMAGE> wherein R3 represents a hydrogen atom or a methyl group, R4 represents a saturated or unsaturated hydrocarbon group having 12 to 16 carbon atoms when R3 is a hydrogen atom, R4 represents a saturated or unsaturated hydrocarbon group having 11 to 15 carbon atoms when R3 is a methyl group, and R represents a saturated or unsaturated alkyl group having 2 to 20 carbon atoms, which comprises subjecting Sophorolipid to methanolysis and methylation reactions by reaction with methanol in the presence of a strong acid to produce methyl 1-[(2'-O- beta -D-glucopyranosyl- beta -D-glucopyranosyl)oxy]-alkanoate and -alkenoate, and subjecting the resulting mixture to ester interchange by reaction with an alcohol represented by the formula, ROH wherein R is the same as defined above.
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