申请人:KYOWA HAKKO KOGYO CO., LTD.
                            
                            
                                公开号:EP0607607A1
                            
                            
                                公开(公告)日:1994-07-27
                            
                            
Disclosed are xanthine derivatives represented by the following Formula (I):
 in which R¹, R², and R³ independently represent hydrogen or lower alkyl;
Q¹, Q², and Q³ independently represent hydrogen, lower alkyl, lower alkoxy, or halogen;
and X represents -COR⁴ (in which R⁴ represents hydrogen, hydroxy, lower alkyl, or lower alkoxy) or -SO₂R⁵ in which R⁵ represents hydroxy, lower alkoxy, trifluoromethyl,
 in which R⁶ and R⁷ independently represent hydrogen, hydroxy-substituted or unsubstituted lower alkyl, aryl, or
 (in which m represents an integer of 1 to 3; and R⁸ and R⁹ independently represent hydrogen or lower alkyl), or
 (in which Y represents a single bond, oxygen, or N-R¹⁰ in which R¹⁰ represents hydrogen or lower alkyl; and n1 and n2 independently represent an integer of 1 to 3 )}, and pharmaceutically acceptable salts thereof.
                            所公开的是由下式 (I) 所代表的
黄嘌呤衍
生物:
 其中 R¹、R² 和 R³ 独立地代表氢或低级烷基;
Q¹、Q² 和 Q³ 独立地代表氢、低级烷基、低级烷氧基或卤素;
X代表-COR⁴(其中R⁴代表氢、羟基、低级烷基或低级烷氧基)或-SO₂R⁵ 其中R⁵代表羟基、低级烷氧基、三
氟甲基、
 其中 R⁶ 和 R⁷ 独立地代表氢、羟基取代或未取代的低级烷基、芳基,或
 (其中 m 代表 1 至 3 的整数;R⁸ 和 R⁹ 独立地代表氢或低级烷基),或
 (其中 Y 代表单键、氧或 N-R¹⁰,其中 R¹⁰ 代表氢或低级烷基;且 n1 和 n2 独立地代表 1 至 3 的整数)},及其药学上可接受的盐。