申请人:Kyowa Hakko Kogyo Co., Ltd.
公开号:US05270316A1
公开(公告)日:1993-12-14
There are disclosed condensed purine derivatives represented by formula; ##STR1## in which R.sup.3 represents hydrogen, lower alkyl or benzyl; each of X.sup.1 and X.sup.2 independently represents hydrogen, lower alkyl, aralkyl or phenyl; and n is an integer of 0 or 1; R.sup.1 represents hydrogen, lower alkyl, alicyclic alkyl, noradamantan-3-yl, dicyclopropylmethyl or styryl; and R.sup.2 represents hydrogen, lower alkyl or alicyclic alkyl; or a pharmaceutically acceptable salt thereof. The derivatives and pharmaceutically acceptable salts are useful as diuretics, renal protecting agents, antiallergic agents and hypotensives.
公式表示的披露的浓缩嘌呤衍生物如下;##STR1## 其中R.sup.3代表氢、较低的烷基或苄基;X.sup.1和X.sup.2中的每一个独立地代表氢、较低的烷基、芳基烷基或苯基;n是0或1的整数;R.sup.1代表氢、较低的烷基、脂环烷基、诺伊达曼丹-3-基、二环丙基甲基或苯乙烯基;R.sup.2代表氢、较低的烷基或脂环烷基;或其药学上可接受的盐。这些衍生物和药学上可接受的盐可用作利尿剂、肾脏保护剂、抗过敏剂和降压剂。