A compound of formula (I):
1
wherein:
R
1
and R
2
together form a benzo ring optionally substituted by halogen or by alkyl, alkoxy, cyano, nitro, hydroxy, amino, alkylamino, dialkylamino or trifluoromethyl, and R
3
represents hydrogen, or
R
1
represents hydrogen, and R
2
and R
3
together form a benzo ring optionally substituted by halogen or by alkyl, alkoxy, cyano, nitro, hydroxy, amino, alkylamino, dialkylamino or trifluoromethyl,
its enantiomers, diastereoisomers, and addition salts thereof with a pharmaceutically acceptable acid or base.
化合物式(I):其中:R1和R2共同形成苯环,可选择地被卤素或烷基,烷氧基,
氰基,硝基,羟基,
氨基,烷基
氨基,二烷基
氨基或三
氟甲基取代,R3代表氢,或R1代表氢,而R2和R3共同形成苯环,可选择地被卤素或烷基,烷氧基,
氰基,硝基,羟基,
氨基,烷基
氨基,二烷基
氨基或三
氟甲基取代,其对映体,对映异构体和其与药用可接受酸或碱的加合物。