The present invention provides a compound of formula I, or a salt or prodrug thereof:
wherein R¹ represents hydrogen or methyl; and
R² represents hydrogen, methyl, ethyl, ethenyl, amino, methylamino, dimethylamino, chloro, bromo, cyano or methoxy; which compounds are useful in the treatment and/or prevention of neurological and mental conditions and/or of severe painful conditions.
本发明提供了式 I 的化合物或其盐或原药:
其中 R¹ 代表氢或甲基;以及
R²代表氢、甲基、乙基、
乙烯基、
氨基、甲
氨基、
二甲氨基、
氯、
溴、
氰基或甲氧基;这些化合物可用于治疗和/或预防神经和精神疾病和/或剧烈疼痛。