申请人:Takeda Chemical Industries, Ltd.
公开号:US04898986A1
公开(公告)日:1990-02-06
Disclosed is a novel inosose compound represented by the general formula: ##STR1## wherein X.sup.1 and X.sup.2 are both halogen; X.sup.1 is hydrogen and X.sup.2 is halogen; or X.sup.1 is --SQ.sup.1 and X.sup.2 is --SQ.sup.2 (each of Q.sup.1 and Q.sup.2 is lower alkyl or Q.sup.1 and Q.sup.2 may form lower alkylene), R.sup.1 is a protective group for hydroxyl and Y is .dbd.O, .dbd.N--Z (Z is hydroxyl which may be protected) or ##STR2## (A is hydrogen or an amine residue), particularly to the compound wherein the symbol Y is oxygen. The inosose compound is useful as intermediates for production of valiolamine and the N-substituted derivatives thereof, which have potent .alpha.-glucosidase inhibiting activities and are useful as preventives or therapeutics for symptoms of hyperglycemia and various diseases derived therefrom in human and animals, such as diabetes, obesity and hyperlipemia.
本发明揭示了一种新型的inosose化合物,其通式表示为:##STR1## 其中X.sup.1和X.sup.2均为卤素;X.sup.1为氢,X.sup.2为卤素;或者X.sup.1为--SQ.sup.1,X.sup.2为--SQ.sup.2(其中Q.sup.1和Q.sup.2各自为较低的烷基或Q.sup.1和Q.sup.2可形成较低的烷基烯),R.sup.1为羟基的保护基,Y为.dbd.O,.dbd.N--Z(Z为可能被保护的羟基)或者##STR2##(A为氢或胺基残基),特别是其中符号Y为氧的化合物。这种inosose化合物可用作制备valiolamine及其N-取代衍生物的中间体,这些衍生物具有强大的α-葡萄糖苷酶抑制活性,可用作预防或治疗人类和动物的高血糖症状及由此引起的各种疾病,如糖尿病、肥胖症和高脂血症。