Galactosyl maltooligosaccharide derivatives

Details Galactosyl maltooligosaccharide derivatives Galactosyl maltooligosaccharide derivatives

1992-09-04

1995-01-03

Robinson, Douglas W.

Organic compounds -- part of the class 532-570 series

Organic compounds

Carbohydrates or derivatives

536 41, 536 178, 536 184, C07G 1700, C07G 300, C07H 100, C08B 3700

Patent

active

053788311

ABSTRACT:
Galactosyl maltooligosaccharide derivatives represented by formula (1): ##STR1## wherein at least one of X.sub.1 and X.sub.2 represents a galactosyl group and the other represents a hydrogen atom, R represents a hydrogen atom or a substituted or unsubstituted phenyl group, and n is an integer of from 2 to 5. The derivatives are prepared by reacting a sugar with a galactosyl group with a maltooligosaccharide represented by formula (2): ##STR2## R represents a hydrogen atom or a substituted or unsubstituted phenyl group, and n is an integer of from 2 to 5; in the presence of .alpha.-galactosidase or .beta.-galactosidase. The derivatives are used for measurement of .alpha.-amylase activity.

REFERENCES:
patent: 4857640 (1989-08-01), Henkel et al.
patent: 4963479 (1990-10-01), Chavez et al.
Usui et al (1992) Analytic Biochemistry 202, pp. 61-67.
Usui et al (1996) Japan Data Base Abstract Accession No. 91-264596.
Ogawa et al (1990) Agric Biol Chem, 54, pp. 581-586.
Usui et al (1988) J. Biochem 103, pp. 969-972.

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