Preparation of cyrstalline α-kojibiose octaacetate from dextran B-1299-S: Its conversion into p-nitrophenyl and p-isothiocyanatophenyl β-kojibioside
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چکیده
منابع مشابه
PREPARATION OF CRYSTALLINE +KOJIBIOSE OCTAACETATE FROM DEXTRAN B-1299-S: ITS CONVERSION IN-l-0 p-NITROPHENYL AND p-ISOTHIOCYANATOPHENYL
Acetolysis of dextran B-1299-S provides a preparative approach to crystalline u-kojibiose octaacetate. The latter was transformed via crystalline hepta-O-acetylct-kojibiosyl bromide into p-nitrophenyl and p-isothiocyanatophenyl /3-kojibiosides.
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Condensation OF tetra-U-acetyk-D-glucopyranosyl bromide withpnitrophenyl 4,6-O-benzylidene-/?-D-glucopyranoside followed by appropriate deblocking reactions gives rise to an approximately equimolar mixture of p-nitrophenyl @,ophoroside and pnitrophenyi Plaminarabioside. The two glycosides are readiIy separated and isolated in pure form by cellulose-column chromatography.
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ژورنال
عنوان ژورنال: Carbohydrate Research
سال: 1973
ISSN: 0008-6215
DOI: 10.1016/s0008-6215(00)82439-8