A 1,4-benzoxazine derivative of the following formula (I):
or a pharmaceutically acceptable salt thereof is disclosed. The compound of the present invention is useful as a medicament for preventing or treating disorders induced by intracellular acidosis during myocardial ischemia, such as cardiac dysfunction, myocardial necrosis, arrhythmia, reperfusion injury, and the like, which are observed in ischemic heart diseases (e.g. myocardial infarction, angina pectoris, etc.).
下式(I)的 1,4-
苯并恶嗪衍
生物:
或其药学上可接受的盐。本发明的化合物可作为一种药物,用于预防或治疗心肌缺血时细胞内酸中毒诱发的疾病,如心功能不全、心肌坏死、心律失常、再灌注损伤等,这些疾病在缺血性心脏病(如心肌梗塞、心绞痛等)中均可观察到。