A sugar ester derivative of the general formula (I)
wherein G stands for a group of the formula (A)
or a group of the formula (B)
wherein t means 0 or 1; at least one of R1 and R2 means an ester residue of a saturated or unsaturated fatty acid having 1 - 30 carbon atoms and the other group means hydrogen atom or acetyl group, and R3 means a group of the formula (C)
wherein X means a halogen atom, m means an integer of 0 to 4, Y means hydroxy group, an alkoxy group, a carboxyl group or sulfonic acid group, n means 0 or 1 and Z means nitro group or nitrovinyl group and its use.
The sugar ester derivative of the general formula (1) is useful as a substrate for the measurement of lipase or esterase activities, and the reagents and the methods for measuring lipase or esterase activities which comprise said sugar ester derivative as the substrate are excellent in terms of reproducibility and sensitivity and enable the measurement of lipase or esterase activities in accordance with rate-assay method by an easy procedure.
通式(I)的
糖酯衍
生物
其中 G 代表式(A)的基团
或式(B)的基团
其中 t 表示 0 或 1;R1 和 R2 中至少一个表示具有 1-30 个碳原子的饱和或不饱和
脂肪酸的酯残基,另一个基团表示氢原子或乙酰基,R3 表示式(C)的基团
其中 X 指卤素原子,m 指 0 至 4 的整数,Y 指羟基、烷氧基、羧基或
磺酸基,n 指 0 或 1,Z 指硝基或
硝基乙烯基及其用途。
通式(1)的
糖酯衍
生物可用作测定
脂肪酶或
酯酶活性的底物,以所述
糖酯衍
生物为底物的测定
脂肪酶或
酯酶活性的试剂和方法具有良好的重现性和灵敏度,并能以简便的程序按照速率测定法测定
脂肪酶或
酯酶活性。