申请人:Sankyo Company, Limited
公开号:US05877199A1
公开(公告)日:1999-03-02
A compound of formula (I): ##STR1## wherein Y.sup.1, Y.sup.2, Y.sup.3 and Y.sup.4 are each hydrogen, halogen, nitro, cyano, hydroxyl, thiol, amino, alkyl, haloalkyl, alkylthio, a protected or unprotected carboxyl, a protected or unprotected sulfonamide, or tetrazol; one of R.sup.1 and R.sup.2 is hydrogen, alkyl, aryl, aralkyl, oxazolyl, or a protected or unprotected carboxyl and the other of R.sup.1 and R.sup.2 is hydrogen, alkyl, aryl or aralkyl; and R.sup.3 is hydrogen or an amino protecting group, and pharmaceutically acceptable salts or esters thereof. The compounds are effective for treating dementia, Alzheimer's disease and delirium and are effective as sedatives.
式(I)的化合物:##STR1##其中Y.sup.1、Y.sup.2、Y.sup.3和Y.sup.4分别为氢、卤素、硝基、氰基、羟基、硫醇基、氨基、烷基、卤代烷基、烷硫基、受保护或未受保护的羧基、受保护或未受保护的磺酰胺基或四唑基;R.sup.1和R.sup.2中的一个为氢、烷基、芳基、芳基烷基、噁唑基或受保护或未受保护的羧基,另一个为氢、烷基、芳基或芳基烷基;R.sup.3为氢或氨基保护基,以及其药学上可接受的盐或酯。这些化合物对治疗痴呆症、阿尔茨海默病和谵妄症有效,并且作为镇静剂也有效。