N-substituted pseudo-aminosugars and pharmaceutical compositions
申请人:Takeda Chemical Industries, Ltd.
公开号:US04595678A1
公开(公告)日:1986-06-17
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.
Novel aminocyclitols, namely the compounds of the formula ##STR1## wherein X is hydroxyl group, a halogen or an acyloxy group; Y is hydrogen or a halogen; and OR.sup.1 is an optionally protected hydroxyl group; and their production. These aminocyclitols are important intermediates for preparing valiolamine having .alpha.-glucosidase inhibitory activity.