A pyrazine derivative of the following formula (I):
wherein
R
1
is hydrogen or optionally substituted lower alkyl; X is hydrogen, halogen, hydroxy, cyano, acyl, or amino, aryl, heterocyclic group or the like; Y is hydrogen, halogen, hydroxy, acyl, amino, or the like; Z is aryl or heteroaryl, each of which is optionally substituted; or a salt thereof. The pyrazine compound (I) and a salt thereof of the present invention are adenosine antagonists and are useful for the prevention and/or treatment of depression, dementia (e.g. Alzheimer's disease, cerebrovascular dementia, dementia accompanying Parkinson's disease, etc.), Parkinson's disease, anxiety, pain, cerebrovascular disease (e.g. stroke, etc.), heart failure and the like.
以下是公式(I)的
吡嗪衍
生物:
其中
R
1
为氢或可选择取代的较低烷基;X为氢、卤素、羟基、
氰基、酰基、
氨基、芳基、杂环基或类似基团;Y为氢、卤素、羟基、酰基、
氨基或类似基团;Z为芳基或杂环芳基,每个都可选择取代;或其盐。本发明的
吡嗪化合物(I)及其盐是
腺苷拮抗剂,可用于预防和/或治疗抑郁症、痴呆症(如阿尔茨海默病、脑血管性痴呆、帕
金森病伴随的痴呆等)、帕
金森病、焦虑症、疼痛、脑血管疾病(如中风等)、心力衰竭等。