A compound of the general formula: ##STR1## wherein A is hydrogen or a hydroxyl group; B is (1) a group of the formula; ##STR2## (2) a group of the formula; ##STR3## or (3) a group of the formula; ##STR4## or a pharmaceutically acceptable salt thereof is novel and possesses excellent inhibitory activity against .alpha.-glucoside hydrolase and are useful for hyperglycemic symptoms and various disorders caused by hyperglycemia.
一种具有通式的化合物:##STR1## 其中A为氢或羟基;B为(1)式的基团; ##STR2## (2)式的基团; ##STR3## 或(3)式的基团; ##STR4## 或其药学上可接受的盐是新颖的,具有优异的α-
葡萄糖苷
水解酶抑制活性,并且对于高血糖症状和由高血糖引起的各种疾病非常有用。