申请人:Kyowa Hakko Kogyo Co., Ltd.
公开号:US05703085A1
公开(公告)日:1997-12-30
The present invention relates to novel xanthine derivatives and pharmaceutically acceptable salts thereof, represented by Formula (I): ##STR1## wherein R.sup.1, R.sup.2, and R.sup.3 independently represent hydrogen, lower alkyl, lower alkenyl, or lower alkynyl, R.sup.4 represents lower alkyl, or substituted or unsubstituted aryl, R.sup.5 and R.sup.6 independently represent hydrogen, lower alkyl, and lower alkoxy, or R.sup.5 and R.sup.6 are combined together to represent --O--(CH.sub.2)p--O-- (p is an integer of 1 to 3), n represents 0, 1, or 2, and m represents 1 or 2. The compounds of the present invention have an adenosine A.sub.2 receptor antagonistic activity, and are useful for the treatment or prevention of various kinds of diseases caused by hyperergasia of adenosine A.sub.2 receptors (for example, Parkinson's disease, senile dementia, depression, asthma, and osteoporosis).
本发明涉及新型黄嘌呤衍生物及其药用可接受的盐,表示为化学式 (I):##STR1## 其中 R.sup.1、R.sup.2 和 R.sup.3 独立表示氢、较低烷基、较低烯基或较低炔基,R.sup.4 表示较低烷基,或取代或未取代的芳基,R.sup.5 和 R.sup.6 独立表示氢、较低烷基和较低烷氧基,或者 R.sup.5 和 R.sup.6 结合在一起表示 --O--(CH.sub.2)p--O--(p 为 1 到 3 的整数),n 表示 0、1 或 2,m 表示 1 或 2。本发明的化合物具有腺苷 A.sub.2 受体拮抗活性,并可用于治疗或预防由腺苷 A.sub.2 受体过度活跃引起的各种疾病(例如帕金森病、老年性痴呆、抑郁症、哮喘和骨质疏松症)。