| abstract |
Disclosed are dihydroimidazo [5,1-a]-beta-carboline compounds of formula (I), wherein: R1, R2, R3 and R4 are independently H, halogen, alkyl, hydroxyl, alkoxy, trihalo-alkyl, trihalo-alkoxy, nitro, cyano, amino, alkylamino, dialkylamino, aryl, aryl-alkyl, carboxyl, alkylcarbonyloxy, acyl, aryloxy, or arylalkoxy, R5 is H, alkyl, aryl, and R6 and R7 are independently H, halo, alkyl, hydroxyl, alkoxy, trohalo-alkyl, trihalo-alkoxy, cyano, amino, alkylamino, dialkylamino, aryl, arylalkyl, carboxyl, alkylcarbonyloxy, acyl, aryloxy, or arylalkoxy. The compounds are used for the manufacture of medicaments for use as hypnotics. |