申请人:KYOWA HAKKO KOGYO KABUSHIKI KAISHA
公开号:EP0698607A1
公开(公告)日:1996-02-28
A xanthine derivative represented by general formula (I) or a pharmacologically acceptable salt thereof, wherein R¹, R² and R³ are the same or different from one another and each represents hydrogen, lower alkyl, lower alkenyl or lower alkynyl; R⁴ represents lower alkyl or (un)substituted aryl; R⁵ and R⁶ are the same or different from each other and each represents hydrogen, lower alkyl or lower alkoxy, or R⁵ and R⁶ are combined together to represent -O-(CH₂)p-O- (wherein p represents an integer of 1 to 3); n represents 0, 1 or 2; and m represents 1 or 2. The compound has an adenosine A₂ receptor antagonism and is useful for treating or preventing various diseases caused by the hyperfunctioning of adenosine A₂ receptors, such as Parkinson's disease, senile dementia, depression, asthma or osteoporosis.
通式(I)代表的黄嘌呤衍生物或其药理学上可接受的盐,其中 R¹、R² 和 R³ 彼此相同或不同,各自代表氢、低级烷基、低级烯基或低级炔基;R⁴ 代表低级烷基或(未)取代的芳基;R⁵ 和 R⁶ 彼此相同或不同,且各自代表氢、低级烷基或低级烷氧基,或 R⁵ 和 R⁶ 结合在一起代表 -O-(CH₂)p-O-(其中 p 代表 1 至 3 的整数);n 代表 0、1 或 2;以及 m 代表 1 或 2。该化合物具有腺苷 A₂受体拮抗作用,可用于治疗或预防由腺苷 A₂受体功能亢进引起的各种疾病,如帕金森病、老年痴呆症、抑郁症、哮喘或骨质疏松症。