A pyrazolopyrazine compound of the following formula (I).
1
wherein
R
1
is hydrogen or a suitable substituent; and
R
2
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
化学式为(I)的
吡唑吡嗪化合物,其中R1为氢或适当的取代基;R2为氢或卤素,或其盐。本发明的
吡唑吡嗪化合物(I)及其盐是
腺苷受体拮抗剂,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
金森病伴随的痴呆症等)、帕
金森病、焦虑症、疼痛、脑血管疾病(如中风等)、心力衰竭等。