申请人:KYOWA HAKKO KOGYO CO., LTD.
公开号:EP0590919A1
公开(公告)日:1994-04-06
Disclosed as therapeutic agents for Parkinson's disease are xanthine derivatives of the formula (I):
in which:
R¹ and R² each represent methyl or ethyl;
R³ represents hydrogen, C₁-C₆ straight or branched chain alkyl or C₂-C₆ straight or branched chain alkenyl or alkynyl;
R⁴ represents C₃-C₈ cycloalkyl; a -(CH₂)n-R⁵ group where n is 0 or an integer of from 1 to 4, and R⁵ represents phenyl, naphthyl or a heterocyclic group or a substituted phenyl, naphthyl or heterocyclic group containing from 1-4 substituents selected from C₁-C₆ alkyl, C₁-C₆ alkoxy, hydroxy, halogen, nitro, amino, mono- or di-(C₁-C₆) alkylamino, trifluoromethyl, benzyloxy, phenyl, phenoxy or C₁-C₆ alkoxy substituted by hydroxy, C₁-C₆ alkoxy, halogen, amino, azide, carboxy or (C₁-C₆ alkoxy)carbonyl;
or a
group where Y¹ and Y² each represent hydrogen, halogen, or C₁-C₆ straight or branched chain alkyl; and Z represents a
group in which R⁶ represents hydrogen, hydroxy, C₁-C₆ straight or branched chain alkyl, C₁-C₆ straight or branched chain alkoxy, halogen, nitro, or amino, and m represents an integer of from 1 to 4; a phenyl, naphthyl or heterocyclic group or a substituted phenyl, naphthyl or heterocyclic group as defined under R⁵;
and X¹ and X² each represent O or S;
or a pharmaceutically acceptable salt thereof.
作为帕金森病治疗剂公开的是式 (I) 的黄嘌呤衍生物:
其中
R¹ 和 R² 各自代表甲基或乙基;
R³ 代表氢、C₁-C₆ 直链或支链烷基或 C₂-C₆ 直链或支链烯基或炔基;
R⁴ 代表 C₃-C₈ 环烷基;一个-(CH₂)n-R⁵基团,其中 n 为 0 或 1 至 4 的整数,且 R⁵ 代表苯基、萘基或杂环基,或代表含有 1-4 个选自 C₁-C₆ 烷基的取代基的取代苯基、萘基或杂环基、C₁-C₆烷氧基、羟基、卤素、硝基、氨基、单或双(C₁-C₆)烷基氨基、三氟甲基、苄氧基、苯基、苯氧基或 C₁-C₆烷氧基、苯氧基或被羟基、C₁-C₆ 烷氧基、卤素、氨基、叠氮化物、羧基或 (C₁-C₆ 烷氧基)羰基取代的 C₁-C₆ 烷氧基;
或
其中 Y¹ 和 Y² 分别代表氢、卤素或 C₁-C₆直链或支链烷基的基团;以及 Z 代表一个基团。
其中 R⁶ 代表氢、羟基、C₁-C₆ 直链或支链烷基、C₁-C₆ 直链或支链烷氧基、卤素、硝基或氨基,且 m 代表 1 至 4 的整数的基团;R⁵ 中定义的苯基、萘基或杂环基团或取代的苯基、萘基或杂环基团;
且 X¹ 和 X² 各自代表 O 或 S;
或其药学上可接受的盐。