Process for producing a glycolipid methyl ester
First Claim
1. A process for producing a glycolipid methyl ester represented by the formula (I), ##STR7## wherein R3 represents hydrogen or methyl, and, R4 represents a staurated or unsaturated hydrocarbon group having 12 to 16 carbon atoms when R3 is hydrogen, and R4 represents a saturated or unsaturated hydrocarbon group having 11 to 15 carbon atoms when R3 is methyl, which comprises mixing at least one polyhydric alcohol represented by formula (III) or (IV), ##STR8## wherein R5 represents hydrogen or methyl, R6 and R7 represent hydrogen or an alkyl group having 1 to 5 carbon atoms, and m and n represent integers from 1 to 6, with hydrated Sophorolipid;
- removing water by distillation under reduced pressure; and
subjecting the resulting Sophorolipid-polyhydric alcohol system to methanolysis and methylation reactions by reaction with methanol in the presence of a strong acid.
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Abstract
A glycolipid methyl ester represented by the formula (I), ##STR1## wherein R3 represents a hydrogen atom or a methyl group, and R4 represents a saturated or unsaturated hydrocarbon group having 12 to 16 carbon atoms when R3 is a hydrogen atom, and R4 represents a saturated or unsaturated hydrocarbon group having 11 to 15 carbon atoms when R3 is a methyl group, is produced by adding at least one polyhydric alcohol represented by the formula (III) or (IV), ##STR2## wherein R5 represents a hydrogen atom or a methyl group, R6 and R7 represent a hydrogen atom or an alkyl group having 1 to 5 carbon atoms, and m and n represent integers from 1 to 6, to hydrated Sophorolipid, removing water by distillation under reduced pressure, and subjecting the resulting Sophorolipid-polyhydric alcohol system to methanolysis and methylation by reaction with methanol in the presence of a strong acid.
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7 Claims
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1. A process for producing a glycolipid methyl ester represented by the formula (I), ##STR7## wherein R3 represents hydrogen or methyl, and, R4 represents a staurated or unsaturated hydrocarbon group having 12 to 16 carbon atoms when R3 is hydrogen, and R4 represents a saturated or unsaturated hydrocarbon group having 11 to 15 carbon atoms when R3 is methyl, which comprises mixing at least one polyhydric alcohol represented by formula (III) or (IV), ##STR8## wherein R5 represents hydrogen or methyl, R6 and R7 represent hydrogen or an alkyl group having 1 to 5 carbon atoms, and m and n represent integers from 1 to 6, with hydrated Sophorolipid;
- removing water by distillation under reduced pressure; and
subjecting the resulting Sophorolipid-polyhydric alcohol system to methanolysis and methylation reactions by reaction with methanol in the presence of a strong acid. - View Dependent Claims (2, 3, 4, 5, 6, 7)
- removing water by distillation under reduced pressure; and
Specification