N-SUBSTITUTED PSEUDO-AMINOSUGARS, THEIR PRODUCTION AND USE

摘要

A compound of the formula: wherein A is a chain hydrocarbon group having 1 to 10 carbon atoms optionally substituted by hydroxyl, phenoxy, thienyl, furyl, pyridyl, cyclohexyl or an optionally substituted phenyl group, or a cyclic hydrocarbon group having 3 to 7 carbon atoms optionally substituted by hydroxyl, B is hydrogen or hydroxyl, and their production and use. These compounds exhibit excellent inhibitory activity against alpha -glucoside hydrolase, thus are useful for hyperglycemic symptoms and various disorders caused by hyperglycemia.