申请人:Kyowa Hakko Kogyo Co., Ltd.
公开号:US05395836A1
公开(公告)日:1995-03-07
There is provided a novel xanthine Compound(I) ##STR1## wherein R.sup.1 and R.sup.2 are the same or different and each represent hydroxy-substituted, oxo-substituted or unsubstituted lower alkyl, Y is a single bond or alkylene, and Q is ##STR2## wherein R.sup.3 and R.sup.4 are the same or different and each represent hydrogen or hydroxy, n is 0 or 1; provided that when both of R.sup.3 and R.sup.4 are hydrogen, at least one of R.sup.1 and R.sup.2 is hydroxy-substituted or oxo-substituted lower alkyl; or a pharmaceutically acceptable salt thereof. The xanthine compound has adenosine A.sub.1 receptor antagonizing activity, and thus shows diuretic effect, renal-protecting effect, bronchodilatory effect, cerebral function improving effect and anti-dementia effect.
提供了一种新的黄嘌呤化合物(I) ##STR1## 其中R.sup.1和R.sup.2相同或不同,分别代表羟基取代,氧代取代或未取代的低烷基,Y是单键或烷基,Q是 ##STR2## 其中R.sup.3和R.sup.4相同或不同,分别代表氢或羟基,n为0或1;假设当R.sup.3和R.sup.4均为氢时,R.sup.1和R.sup.2中至少有一个为羟基取代或氧代取代的低烷基;或其药学上可接受的盐。该黄嘌呤化合物具有腺苷A.sub.1受体拮抗活性,因此具有利尿作用,肾保护作用,支气管扩张作用,改善脑功能作用和抗痴呆作用。