Na+-Glucose Cotransporter Inhibitors as Antidiabetic Agents. II. Synthesis and Structure-Activity Relationships of 4'-Dehydroxyphlorizin Derivatives.
作者:Mitsuya HONGU、Takashi TANAKA、Nobuyuki FUNAMI、Kunio SAITO、Kenji ARAKAWA、Mamoru MATSUMOTO、Kenji TSUJIHARA
DOI:10.1248/cpb.46.22
日期:——
A novel series of 4'-dehydroxyphlorizin derivatives was synthesized and the effects of these compounds on urinary glucose excretion were evaluated in rats. There was a strict structural requirement for activity. Introduction of a small substituent or a flat ring at the 3- and/or the 4-position on the A ring was permissible, but any change at the bridge part between the A and B rings or in the sugar moiety resulted in complete loss of activity. The 6'-OH group on the B ring was also necessary, and even small structural modifications of the 6'-OH group reduced the activity considerably. Among the compounds synthesizez, the 5-benzofuryl derivative 25 was the most potent and was selected as a new lead for further structure-activity relationship investigations.
合成了一系列4'-去羟基荭草苷衍生物,并评估了这些化合物对大鼠尿糖排泄的影响。活性对结构有严格的要求。在A环的3位和/或4位引入小取代基或平面环是允许的,但A环与B环之间的桥接部分或糖部分的任何改变会导致活性的完全丧失。B环上的6'-OH基团也是必要的,即使是6'-OH基团的小结构修改也会显著降低活性。在合成的化合物中,5-苯并呋喃衍生物25是最有效的,并被选为进一步结构-活性关系研究的新先导。