申请人:Nishimura Shin-Ichiro
公开号:US20090018327A1
公开(公告)日:2009-01-15
The present invention is directed to, for example, an oligosaccharide having at an end thereof a 4-position halogenated galactose residue represented by formula (I):
(wherein X represents a halogen atom, and R represents a monosaccharide, an oligosaccharide, or a carrier), a transferase inhibitor containing the oligosaccharide, and a method for inhibiting sugar chain elongation reaction in the presence of glycosyltransferase, the method including employing the inhibitor.
The invention also provides a method for producing a 4-position halogenated galactose sugar nucleotide represented by formula (II):
(wherein each of R
1
to R
3
represents a hydroxyl group, an acetyl group, a halogen atom, or a hydrogen atom; X represents a halogen atom; and M represents a hydrogen ion or a metal ion), wherein the method employs bacterium-derived galactokinase and bacterium-derived hexose-1-phosphate uridylyltransferase.
The invention is also directed to a sugar chain containing 4-position halogenated galactose envisaged to be employed as drugs and other materials, and to applications of the compound.
本发明涉及一种寡糖,其末端具有由公式(I)表示的4位卤代半乳糖残基:(其中X代表卤素原子,R代表单糖,寡糖或载体),含有该寡糖的转移酶抑制剂,以及在存在糖基转移酶时抑制糖链延长反应的方法,该方法包括使用该抑制剂。该发明还提供了一种生产由公式(II)表示的4位卤代半乳糖核苷酸的方法:(其中R1至R3中的每一个代表羟基、乙酰基、卤素原子或氢原子;X代表卤素原子;M代表氢离子或金属离子),该方法利用细菌来源的半乳糖激酶和细菌来源的己糖-1-磷酸尿苷转移酶。本发明还涉及一种含有4位卤代半乳糖的糖链,可用作药物和其他材料,并涉及该化合物的应用。