Na+-Glucose Cotransporter Inhibitors as Antidiabetic Agents. III. Synthesis and Pharmacological Properties of 4'-Dehydroxyphlorizin Derivatives Modified at the OH Groups of the Glucose Moiety.
作者:Mitsuya HONGU、Nobuyuki FUNAMI、Youichi TAKAHASHI、Kunio SAITO、Kenji ARAKAWA、Mamoru MATSUMOTO、Hirokazu YAMAKITA、Kenji TSUJIHARA
DOI:10.1248/cpb.46.1545
日期:——
To overcome hydrolysis by β-glucosidase persent in the digestive tract, the OH groups on the glucose moiety of the 4'-dehydroxyphlorizin derivatives (1, 2, 3) were modified with various kinds of patterns, and then the effects of the modified compounds on urinary glucose excretion were evaluated in rats. Among them, triacetyl (9), , 2, 3-O-diacetyl (17), 6-O-methoxycarbonyl (34), 4-O-methoxycarbonyl (38), and 2-O-acetyl (41) derivatives showed more potent effect than the parent compound 2 by oral administration (p.o.). The stabilities of the compounds 34, 38, and 41 against β-glucosidase were higher than that of 2. The increase in oral activity was found to correlate with the enhancement of the stability against β-glucosidase.
为了克服消化道中β-葡萄糖苷酶对4'-去氢氧基根皮苷衍生物(1、2、3)的水解作用,对其葡萄糖部分上的羟基进行了多种模式的修饰,随后评估了这些修饰化合物对大鼠尿糖排泄的影响。其中,三乙酰化(9)、2,3-二乙酰化(17)、6-O-甲氧羰基化(34)、4-O-甲氧羰基化(38)和2-O-乙酰化(41)衍生物通过口服给药(p.o.)显示出比母体化合物2更强的效果。化合物34、38和41对β-葡萄糖苷酶的稳定性高于化合物2。口服活性的增加与对β-葡萄糖苷酶稳定性的增强相关。