Abstract: A compound of formula (I): wherein: R1 and R2 together form a benzo ring optionally substituted by halogen or by alkyl, alkoxy, cyano, nitro, hydroxy, amino, alkylamino, dialkylamino or trifluoromethyl, and R3 and R4 represent hydrogen, or R1 and R4 represent hydrogen and R2 and R3 together form a benzo ring optionally substituted by halogen or by alkyl, alkoxy, cyano, nitro, hydroxy, amino, alkylamino, dialkylamino or trifluoromethyl, or R1 and R2 represent hydrogen and R3 and R4 together form a benzo ring optionally substituted by halogen or by alkyl, alkoxy, cyano, nitro, hydroxy, amino, alkylamino, dialkylamino or trifluoromethyl, addition salts thereof with a pharmaceutically acceptable acid or base, and methods of treating conditions susceptible to ?2-AR/5-HT2C antagonists.

Abstract: A compound of formula (I): wherein: R1 and R2 together form a benzo ring optionally substituted by halogen or by alkyl, alkoxy, cyano, nitro, hydroxy, amino, alkylamino, dialkylamino or trifluoromethyl, and R3 and R4 represent hydrogen, or R1 and R4 represent hydrogen and R2 and R3 together form a benzo ring optionally substituted by halogen or by alkyl, alkoxy, cyano, nitro, hydroxy, amino, alkylamino, dialkylamino or trifluoromethyl, or R1 and R2 represent hydrogen and R3 and R4 together form a benzo ring optionally substituted by halogen or by alkyl, alkoxy, cyano, nitro, hydroxy, amino, alkylamino, dialkylamino or trifluoromethyl, addition salts thereof with a pharmaceutically acceptable acid or base, and methods of treating conditions susceptible to ?2-AR/5-HT2C antagonists.