A pyrazolopyrazine compound of the following formula (I).
wherein
R1 is hydrogen or a suitable substituent; and
R2 is hydrogen or halogen,
or a salt thereof.
The pyrazolopyrazine compound (I) and 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
吡唑吡嗪化合物:
其中,R1是氢或适当的取代基;R2是氢或卤素,或其盐。本发明的
吡唑吡嗪化合物(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(例如阿尔茨海默病、脑血管痴呆、帕
金森病伴随的痴呆等)、帕
金森病、焦虑症、疼痛、脑血管疾病(例如中风等)、心力衰竭等。