This invention provides a compound of the formula (I), wherein R
1
and R
2
independently represents a hydrogen atom or the like; R
3
represents an aryl group having from 6 to 10 ring carbon or the like; said aryl groups having from 6 to 10 ring carbon atoms and said heteroaryl groups having from 5 to 10 atoms are unsubstituted or are substituted by at least one substituent selected from the group consisting of substituents a; said substituents a are selected from the group consisting of halogen atoms or the like; or a pharmaceutically acceptable ester of such compound, or a pharmaceutically acceptable salt thereof. These compounds are useful for the treatment of disease conditions caused by overactivation of NMDA NR2B receptor such of pain, or the like in mammalian. This invention also provides a pharmaceutical composition comprising the above compound.
本发明提供了式(I)的化合物,其中R1和R2独立地表示氢原子或类似物;R3表示具有6至10个环碳或类似物的芳基基团;所述芳基基团具有6至10个环碳原子,所述杂环芳基基团具有5至10个原子,未被取代或被至少一种选择自取代物a的取代基组成的取代;所述取代基a是从卤原子或类似物的组中选择的;或其药学上可接受的酯或药学上可接受的盐。这些化合物对于治疗由N
MDA NR2B受体过度激活引起的疾病状态如疼痛等在哺乳动物中具有用处。本发明还提供了包括上述化合物的制药组合物。