Tricyclic quinoline and quinoxaline derivatives

Abstract

The present invention relates to tricyclic quinoline and quinoxaline derivatives, to a pharmaceutical composition containing such compounds, to their use as modulators, especially agonists or partial agonists, of the 5-HT2C receptor, their use for preparing a medicament for the prevention or treatment of conditions and disorders which respond to the modulation of 5-HT2C receptor, and to a method for preventing or treating conditions and disorders which respond to the modulation of 5-HT2C receptor.

1 . A compound of the formula (I) 
       
         
           
           
               
               
           
         
         wherein 
         G is (CR 3a R 3b ) n ; 
         X is NR 6  or CR 7 R 8 ; 
         R 1  is selected from the group consisting of hydrogen, cyano, C 1 -C 6 -alkyl, fluorinated C 1 -C 6 -alkyl, C 2 -C 6 -alkenyl, fluorinated C 2 -C 6 -alkenyl, C 2 -C 6 -alkynyl, fluorinated C 2 -C 6 -alkynyl, C 3 -C 8 -cycloalkyl, fluorinated C 3 -C 8 -cycloalkyl, C 1 -C 6 -alkoxy, fluorinated C 1 -C 6 -alkoxy, —C(═O)R 10 , phenyl, phenyl-C 1 -C 2 -alkyl and a 3-, 4-, 5-, 6-, 7- or 8-membered saturated, partially unsaturated or maximally unsaturated heterocyclic ring containing 1, 2, 3 or 4 heteroatoms or heteroatom groups independently selected from N, O, S, NO, SO and SO 2  and optionally also 1 or 2 C═O and/or C═S groups as ring members, where the cyclic moieties in the three last-mentioned radicals may be substituted with one or more substituents R 11 ; 
         each R 2  is independently selected from the group consisting of cyano, nitro, C 1 -C 6 -alkyl, fluorinated C 1 -C 6 -alkyl, C 1 -C 6 -hydroxyalkyl, C 2 -C 6 -alkenyl, fluorinated C 2 -C 6 -alkenyl, C 2 -C 6 -alkynyl, fluorinated C 2 -C 6 -alkynyl, C 3 -C 8 -cycloalkyl, fluorinated C 3 -C 8 -cycloalkyl, C 1 -C 6 -alkoxy, fluorinated C 1 -C 6 -alkoxy, C 1 -C 6 -alkoxy-C 1 -C 4 -alkyl, C 1 -C 6 -hydroxyalkoxy, C 1 -C 6 -alkoxy-C 1 -C 4 -alkoxy, C 1 -C 6 -alkylthio, fluorinated C 1 -C 6 -alkylthio, C 1 -C 6 -alkylsulfinyl, fluorinated C 1 -C 6 -alkylsulfinyl, C 1 -C 6 -alkylsulfonyl, fluorinated C 1 -C 6 -alkylsulfonyl, —NR 12a R 12b , —CH 2 NR 12a R 12b , —NR 12a C(O)R 10 , —C(═O)R 10 , SO 2 NR 12a R 12b , C 1 -C 6 -alkylcarbonyloxy, fluorinated C 1 -C 6 -alkylcarbonyloxy, phenyl, phenyl-C 1 -C 2 -alkyl, phenoxy, phenylsulfonyl, benzyloxy and a 3-, 4-, 5-, 6-, 7- or 8-membered saturated, partially unsaturated or maximally unsaturated ring containing 1, 2, 3 or 4 heteroatoms or heteroatom groups independently selected from N, O, S, NO, SO, SO 2 , C═O and C═S as ring members, where the cyclic moieties in the six last-mentioned radicals may be substituted with one or more substituents R 11 ; 
         R 3a  and R 3b , independently of each other, are selected from the group consisting of hydrogen, cyano, nitro, C 1 -C 6 -alkyl, fluorinated C 1 -C 6 -alkyl, C 1 -C 6 -hydroxyalkyl, C 2 -C 6 -alkenyl, fluorinated C 2 -C 6 -alkenyl, C 2 -C 6 -alkynyl, fluorinated C 2 -C 6 -alkynyl, C 3 -C 8 -cycloalkyl, fluorinated C 3 -C 8 -cycloalkyl, C 1 -C 6 -alkoxy, fluorinated C 1 -C 6 -alkoxy, C 1 -C 6 -alkoxy-C 1 -C 4 -alkyl, C 1 -C 6 -hydroxyalkoxy, C 1 -C 6 -alkoxy-C 1 -C 4 -alkoxy, C 1 -C 6 -alkylthio, fluorinated C 1 -C 6 -alkylthio, C 1 -C 6 -alkylsulfinyl, fluorinated C 1 -C 6 -alkylsulfinyl, C 1 -C 6 -alkylsulfonyl, fluorinated C 1 -C 6 -alkylsulfonyl, —NR 12a R 12b , —CH 2 NR 12a R 12b ,
 —NR 12a C(O)R 10 , —C(═O)R 10 , SO 2 NR 12a R 12b , C 1 -C 6 -alkylcarbonyloxy, fluorinated C 1 -C 6 -alkylcarbonyloxy, phenyl, phenyl-C 1 -C 2 -alkyl, phenoxy, phenylsulfonyl, benzyloxy and a 3-, 4-, 5-, 6-, 7- or 8-membered saturated, partially unsaturated or maximally unsaturated ring containing 1, 2, 3 or 4 heteroatoms or heteroatom groups independently selected from N, O, S, NO, SO, SO 2 , C═O and C═S as ring members, where the cyclic moieties in the six last-mentioned radicals may be substituted with one or more substituents R 11 ; 
 
         R 4a  and R 4b , independently of each other, are selected from the group consisting of hydrogen, cyano, nitro, C 1 -C 6 -alkyl, fluorinated C 1 -C 6 -alkyl, C 1 -C 6 -hydroxyalkyl, C 2 -C 6 -alkenyl, fluorinated C 2 -C 6 -alkenyl, C 2 -C 6 -alkynyl, fluorinated C 2 -C 6 -alkynyl, C 3 -C 8 -cycloalkyl, fluorinated C 3 -C 8 -cycloalkyl, C 1 -C 6 -alkoxy, fluorinated C 1 -C 6 -alkoxy, C 1 -C 6 -alkoxy-C 1 -C 4 -alkyl, C 1 -C 6 -hydroxyalkoxy, C 1 -C 6 -alkoxy-C 1 -C 4 -alkoxy, C 1 -C 6 -alkylthio, fluorinated C 1 -C 6 -alkylthio, C 1 -C 6 -alkylsulfinyl, fluorinated C 1 -C 6 -alkylsulfinyl, C 1 -C 6 -alkylsulfonyl, fluorinated C 1 -C 6 -alkylsulfonyl, —NR 12a R 12b , —CH 2 NR 12a R 12b , —NR 12a C(O)R 1 , —C(═O)R 10 , SO 2 NR 12a R 12b , C 1 -C 6 -alkylcarbonyloxy, fluorinated C 1 -C 6 -alkylcarbonyloxy, phenyl, phenyl-C 1 -C 2 -alkyl, phenoxy, phenylsulfonyl, benzyloxy and a 3-, 4-, 5-, 6-, 7- or 8-membered saturated, partially unsaturated or maximally unsaturated ring containing 1, 2, 3 or 4 heteroatoms or heteroatom groups independently selected from N, O, S, NO, SO, SO 2 , C═O and C═S as ring members, where the cyclic moieties in the six last-mentioned radicals may be substituted with one or more substituents R; or
 R 4a  and R 4b  form together a group ═O or ═S; 
 
         R 5a  and R 5b , independently of each other, are selected from the group consisting of hydrogen, deuterium, halogen, cyano, nitro, hydroxy, C 1 -C 6 -alkyl, fluorinated C 1 -C 6 -alkyl, C 1 -C 6 -hydroxyalkyl, C 2 -C 6 -alkenyl, fluorinated C 2 -C 6 -alkenyl, C 2 -C 6 -alkynyl, fluorinated C 2 -C 6 -alkynyl, C 3 -C 8 -cycloalkyl, fluorinated C 3 -C 8 -cycloalkyl, C 1 -C 6 -alkoxy, fluorinated C 1 -C 6 -alkoxy, C 1 -C 6 -alkoxy-C 1 -C 4 -alkyl, C 1 -C 6 -hydroxyalkoxy, C 1 -C 6 -alkoxy-C 1 -C 4 -alkoxy, C 1 -C 6 -alkylthio, fluorinated C 1 -C 6 -alkylthio, C 1 -C 6 -alkylsulfinyl, fluorinated C 1 -C 6 -alkylsulfinyl, C 1 -C 6 -alkylsulfonyl, fluorinated C 1 -C 6 -alkylsulfonyl, —NR 12a R 12b , —CH 2 NR 12a R 12b , —NR 12a C(O)R 10 , —C(═O)R 10 , SO 2 NR 12a R 12b , C 1 -C 6 -alkylcarbonyloxy, fluorinated C 1 -C 6 -alkylcarbonyloxy, phenyl, phenyl-C 1 -C 2 -alkyl, phenoxy, phenylsulfonyl, benzyloxy and a 3-, 4-, 5-, 6-, 7- or 8-membered saturated, partially unsaturated or maximally unsaturated ring containing 1, 2, 3 or 4 heteroatoms or heteroatom groups independently selected from N, O, S, NO, SO, SO 2 , C═O and C═S as ring members, where the cyclic moieties in the six last-mentioned radicals may be substituted with one or more substituents R 11 ; where R 5a  and R 5b  are not simultaneously hydroxy; or
 R 5a  and R 5b , together with the carbon atom they are bound to, form a 3-, 4-, 5-, 6-, 7- or 8-membered saturated, partially unsaturated or maximally unsaturated ring, where the ring may contain 1, 2, 3 or 4 heteroatoms or heteroatom-containing groups selected from O, S, N, SO, SO 2 , C═O and C═S as ring members, and where the ring may be substituted with one or more substituents R; or 
 R 5a  and R 6 , together with the atoms they are bound to, form a 3-, 4-, 5-, 6-, 7- or 8-membered saturated, partially unsaturated or maximally unsaturated heterocyclic ring, where the ring may further contain 1, 2, 3 or 4 heteroatoms or heteroatom-containing groups selected from O, S, N, SO, SO 2 , C═O and C═S as ring members, and where the ring may be substituted with one or more substituents R 11 ; or 
 R 5a  and R 7 , together with the carbon atoms they are bound to, form a 3-, 4-, 5-, 6-, 7- or 8-membered saturated, partially unsaturated or maximally unsaturated ring, where the ring may contain 1, 2, 3 or 4 heteroatoms or heteroatom-containing groups selected from O, S, N, SO, SO 2 , C═O and C═S as ring members, and where the ring may be substituted with one or more substituents R 11 ; 
 
         R 6  is selected from the group consisting of hydrogen, cyano, C 1 -C 6 -alkyl, fluorinated C 1 -C 6 -alkyl, C 2 -C 6 -alkenyl, fluorinated C 2 -C 6 -alkenyl, C 2 -C 6 -alkynyl, fluorinated C 2 -C 6 -alkynyl, C 3 -C 8 -cycloalkyl, fluorinated C 3 -C 8 -cycloalkyl, C 3 -C 8 -cycloalkyl-C 1 -C 4 -alkyl, fluorinated C 3 -C 8 -cycloalkyl-C 1 -C 4 -alkyl, C 1 -C 6 -alkoxy, fluorinated C 1 -C 6 -alkoxy, —C(═O)R 10 , —SO 2 R 10 , phenyl, phenyl-C 1 -C 2 -alkyl and a 3-, 4-, 5-, 6-, 7- or 8-membered saturated, partially unsaturated or maximally unsaturated heterocyclic ring containing 1, 2, 3 or 4 heteroatoms or heteroatom groups independently selected from N, O, S, NO, SO and SO 2  and optionally also 1 or 2 C═O and/or C═S groups as ring members, where the cyclic moieties in the three last-mentioned radicals may be substituted with one or more substituents R 11 ; 
         R 7  and R 8 , independently of each other, are selected from the group consisting of deuterium, halogen, cyano, nitro, hydroxyl, C 1 -C 6 -alkyl, fluorinated C 1 -C 6 -alkyl, C 1 -C 6 -hydroxyalkyl, C 2 -C 6 -alkenyl, fluorinated C 2 -C 6 -alkenyl, C 2 -C 6 -alkynyl, fluorinated C 2 -C 6 -alkynyl, C 3 -C 8 -cycloalkyl, fluorinated C 3 -C 8 -cycloalkyl, C 1 -C 6 -alkoxy, fluorinated C 1 -C 6 -alkoxy, C 1 -C 6 -alkoxy-C 1 -C 4 -alkyl, C 1 -C 6 -hydroxyalkoxy, C 1 -C 6 -alkoxy-C 1 -C 4 -alkoxy, C 1 -C 6 -alkylthio, fluorinated C 1 -C 6 -alkylthio, C 1 -C 6 -alkylsulfinyl, fluorinated C 1 -C 6 -alkylsulfinyl, C 1 -C 6 -alkylsulfonyl, fluorinated C 1 -C 6 -alkylsulfonyl,
 —NR 12a R 12b , —CH 2 NR 12a R 12b , —NR 12a C(O)R 10 , —C(═O)R 10 , SO 2 NR 12a R 12b , C 1 -C 6 -alkylcarbonyloxy, fluorinated C 1 -C 6 -alkylcarbonyloxy, phenyl, phenyl-C 1 -C 2 -alkyl, phenoxy, phenylsulfonyl, benzyloxy and a 3-, 4-, 5-, 6-, 7- or 8-membered saturated, partially unsaturated or maximally unsaturated ring containing 1, 2, 3 or 4 heteroatoms or heteroatom groups independently selected from N, O, S, NO, SO, SO 2 , C═O and C═S as ring members, where the cyclic moieties in the six last-mentioned radicals may be substituted with one or more substituents R 11 ; where R 7  and R 8  are not simultaneously hydroxyl; and where R 7  is not hydroxyl if R 8  is C 1 -C 6 -alkoxy, fluorinated C 1 -C 6 -alkoxy, C 1 -C 6 -hydroxyalkoxy, C 1 -C 6 -alkoxy-C 1 -C 4 -alkoxy, phenoxy or benzyloxy; or 
 R 7  and R 8 , together with the carbon atom they are bound to, form a 3-, 4-, 5-, 6-, 7- or 8-membered saturated, partially unsaturated or maximally unsaturated ring, where the ring may contain 1, 2, 3 or 4 heteroatoms or heteroatom-containing groups selected from O, S, N, SO, SO 2 , C═O and C═S as ring members, and where the ring may be substituted with one or more substituents R 11 ; 
 
         each R 9  is independently selected from the group consisting of halogen, cyano, nitro, hydroxy, C 1 -C 6 -alkyl, fluorinated C 1 -C 6 -alkyl, C 1 -C 6 -hydroxyalkyl, C 2 -C 6 -alkenyl, fluorinated C 2 -C 6 -alkenyl, C 2 -C 6 -alkynyl, fluorinated C 2 -C 6 -alkynyl, C 3 -C 8 -cycloalkyl, fluorinated C 3 -C 8 -cycloalkyl, C 3 -C 8 -cycloalkenyl, fluorinated C 3 -C 8 -cycloalkenyl, C 1 -C 6 -alkoxy, fluorinated C 1 -C 6 -alkoxy, C 1 -C 6 -alkoxy-C 1 -C 4 -alkyl, C 1 -C 6 -hydroxyalkoxy, C 1 -C 6 -alkoxy-C 1 -C 4 -alkoxy, C 1 -C 6 -alkylthio, fluorinated C 1 -C 6 -alkylthio, C 1 -C 6 -alkylsulfinyl, fluorinated C 1 -C 6 -alkylsulfinyl, C 1 -C 6 -alkylsulfonyl, fluorinated C 1 -C 6 -alkylsulfonyl, —NR 12a R 12b , —CH 2 NR 12a R 12b , —NR 12a C(O)R 10 , —C(═O)R 10 , SO 2 NR 12a R 12b , C 1 -C 6 -alkylcarbonyloxy, fluorinated C 1 -C 6 -alkylcarbonyloxy, phenyl, phenyl-C 1 -C 2 -alkyl, phenoxy, phenylsulfonyl, benzyloxy and a 3-, 4-, 5-, 6-, 7- or 8-membered saturated, partially unsaturated or maximally unsaturated ring containing 1, 2, 3 or 4 heteroatoms or heteroatom groups independently selected from N, O, S, NO, SO, SO 2 , C═O and C═S as ring members, where the cyclic moieties in the six last-mentioned radicals may be substituted with one or more substituents R 11 ; or
 two radicals R 9  bound on neighboring carbon atoms, together with the carbon atoms they are bound to, form a 3-, 4-, 5-, 6-, 7- or 8-membered partially unsaturated or maximally unsaturated ring, where the ring may contain 1, 2, 3 or 4 heteroatoms or heteroatom-containing groups selected from O, S, N, SO, SO 2 , C═O and C═S as ring members, and where the ring may be substituted with one or more substituents R 11 ; 
 
         each R 10  is independently selected from the group consisting of hydrogen, cyano, hydroxy, C 1 -C 6 -alkyl, fluorinated C 1 -C 6 -alkyl, C 1 -C 6 -hydroxyalkyl, C 2 -C 6 -alkenyl, fluorinated C 2 -C 6 -alkenyl, C 2 -C 6 -alkynyl, fluorinated C 2 -C 6 -alkynyl, C 3 -C 8 -cycloalkyl, fluorinated C 3 -C 8 -cycloalkyl, C 1 -C 6 -alkoxy, fluorinated C 1 -C 6 -alkoxy, —NR 12a R 12b , CH 2 NR 12a R 12b , phenyl, phenyl-C 1 -C 2 -alkyl, phenoxy, benzyloxy and a 3-, 4-, 5-, 6-, 7- or 8-membered saturated, partially unsaturated or maximally unsaturated ring containing 1, 2, 3 or 4 heteroatoms or heteroatom groups independently selected from N, O, S, NO, SO, SO 2 , C═O and C═S as ring members, where the cyclic moieties in the five last-mentioned radicals may be substituted with one or more substituents R 11 ; 
         each R 11  is independently selected from the group consisting of halogen, cyano, nitro, hydroxy, C 1 -C 6 -alkyl, fluorinated C 1 -C 6 -alkyl, C 1 -C 6 -hydroxyalkyl, C 2 -C 6 -alkenyl, fluorinated C 2 -C 6 -alkenyl, C 2 -C 6 -alkynyl, fluorinated C 2 -C 6 -alkynyl, C 3 -C 8 -cycloalkyl, fluorinated C 3 -C 8 -cycloalkyl, C 1 -C 6 -alkoxy, fluorinated C 1 -C 6 -alkoxy, C 1 -C 6 -alkoxy-C 1 -C 4 -alkyl, C 1 -C 6 -hydroxyalkoxy, C 1 -C 6 -alkoxy-C 1 -C 4 -alkoxy, C 1 -C 6 -alkylthio, fluorinated C 1 -C 6 -alkylthio, C 1 -C 6 -alkylsulfinyl, fluorinated C 1 -C 6 -alkylsulfinyl, C 1 -C 6 -alkylsulfonyl, fluorinated C 1 -C 6 -alkylsulfonyl, —COOH, —NR 12a R 12b , —CH 2 NR 12a R 12b , C 1 -C 6 -alkylcarbonyl, fluorinated C 1 -C 6 -alkylcarbonyl, C 1 -C 6 -alkoxycarbonyl, fluorinated C 1 -C 6 -alkoxycarbonyl, SO 2 NR 12a R 12b , C 1 -C 6 -alkylcarbonyloxy and fluorinated C 1 -C 6 -alkylcarbonyloxy;
 or two radicals R 11 , together with the atom(s) they are bound to, form a saturated, partially unsaturated or maximally unsaturated 3-, 4-, 5-, 6- or 7-membered carbocyclic or heterocyclic ring, where the heterocyclic ring contains 1, 2 or 3 heteroatoms or heteroatom groups independently selected from N, O, S, NO, SO, SO 2 , C═O and C═S as ring members; 
 
         R 12a  and R 12b , independently of each other and independently of each occurrence, are selected from the group consisting of hydrogen, cyano, C 1 -C 6 -alkyl, fluorinated C 1 -C 6 -alkyl, C 2 -C 6 -alkenyl, fluorinated C 2 -C 6 -alkenyl, C 2 -C 6 -alkynyl, fluorinated C 2 -C 6 -alkynyl, C 3 -C 8 -cycloalkyl, fluorinated C 3 -C 8 -cycloalkyl, C 1 -C 6 -alkoxy, fluorinated C 1 -C 6 -alkoxy, C 1 -C 6 -alkylcarbonyl, fluorinated C 1 -C 6 -alkylcarbonyl, C 1 -C 6 -alkoxycarbonyl, fluorinated C 1 -C 6 -alkoxycarbonyl, phenyl and benzyl, where the phenyl moieties in the two last-mentioned radicals may carry 1, 2 or 3 substituents selected from halogen, cyano nitro, C 1 -C 6 -alkyl, fluorinated C 1 -C 6 -alkyl, C 1 -C 6 -alkoxy and fluorinated C 1 -C 6 -alkoxy; or,
 if R 12a  and R 12b  are bound to the same nitrogen atom, together with this nitrogen atom may form a 3-, 4-, 5-, 6-, 7- or 8-membered saturated, partially unsaturated or maximally unsaturated heterocyclic ring, where the ring may further contain 1, 2, 3 or 4 heteroatoms or heteroatom-containing groups selected from O, S, N, SO, SO 2 , C═O and C═S as ring members, and where the ring may be substituted with one or more substituents selected from halogen, cyano nitro, C 1 -C 6 -alkyl, fluorinated C 1 -C 6 -alkyl, C 1 -C 6 -alkoxy and fluorinated C 1 -C 6 -alkoxy; 
 
         a is 0, 1 or 2; 
         b is 0, 1, 2 or 3; and 
         n is 1 or 2; 
         and the N-oxides, tautomeric forms, stereoisomers and pharmaceutically acceptable salts thereof, and the compound of the general formula I, wherein at least one of the atoms has been replaced by its stable, non-radioactive isotope. 
       
     
     
         2 .- 49 . (canceled) 
     
     
         50 . A compound of formula I as claimed in  claim 1 , selected from the group consisting of:
 8,8-dimethyl-2,3,4,6,7,8-hexahydro-1H-[1,4]diazepino[6,7,1-ij]quinolone;   1,2,3,4-tetrahydrospiro[[1,4]diazepino[6,7,1-ij]quinoline-8,1′-cyclopent[2]en]-6(7H)-one;   8-methyl-8-phenyl-3,4,7,8-tetrahydro-1H-[1,4]diazepino[6,7,1-ij]quinolin-6(2H)-one;   8,8-dimethyl-3,4,7,8-tetrahydro-1H-[1,4]diazepino[6,7,1-ij]quinolin-6(2H)-one;   1,2,3,4-tetrahydrospiro[[1,4]diazepino[6,7,1-ij]quinoline-8,1′-cyclopentan]-6(7H)-one;   1,2,3,4,6,7-hexahydrospiro[[1,4]diazepino[6,7,1-ij]quinoline-8,1′-cyclopentane];   12a-methyl-4,5,6,7,10,11,12,12a-octahydrocyclopenta[c][1,4]diazepino[6,7,1-ij]quinolin-9(9aH)-one;   8-methyl-8-(trifluoromethyl)-2,3,4,6,7,8-hexahydro-1H-[1,4]diazepino[6,7,1-ij]quinolone;   12a-methyl-4,5,6,7,10,11,12,12a-octahydrocyclopenta[c][1,4]diazepino[6,7,1-ij]quinolin-9(9aH)-one;   12a-methyl-4,5,6,7,9,9a, 10,11,12,12a-decahydrocyclopenta[c][1,4]diazepino[6,7,1-ij]quinoline;   8-methyl-8-(trifluoromethyl)-3,4,7,8-tetrahydro-1H-[1,4]diazepino[6,7,1-ij]quinolin-6(2H)-one;   12a-methyl-4,5,6,7,9,9a, 10,11,12,12a-decahydrocyclopenta[c][1,4]diazepino-[6,7,1-ij]quinoline;   8-methyl-8-phenyl-2,3,4,6,7,8-hexahydro-1H-[1,4]diazepino[6,7,1-ij]quinoline;   (R)-5,6,7,9,9a, 10,11,12-octahydro-4H-[1,4]diazepino[1,7,6-de]pyrrolo[1,2-a]quinoxaline;   (S)-5,6,7,9,9a, 10,11,12-octahydro-4H-[1,4]diazepino[1,7,6-de]pyrrolo[1,2-a]quinoxaline;   9-chloro-8,8-dimethyl-2,3,4,6,7,8-hexahydro-1H-[1,4]diazepino[6,7,1-ij]quinoline;   10-chloro-8,8-dimethyl-2,3,4,6,7,8-hexahydro-1H-[1,4]diazepino[6,7,1-ij]quinoline;   9-chloro-8,8-dimethyl-3,4,7,8-tetrahydro-1H-[1,4]diazepino[6,7,1-ij]quinolin-6(2H)-one;   10-chloro-8,8-dimethyl-3,4,7,8-tetrahydro-1H-[1,4]diazepino[6,7,1-ij]quinolin-6(2H)-one;   9-fluoro-8,8-dimethyl-2,3,4,6,7,8-hexahydro-1H-[1,4]diazepino[6,7,1-ij]quinoline;   10-fluoro-8,8-dimethyl-2,3,4,6,7,8-hexahydro-1H-[1,4]diazepino[6,7,1-ij]quinoline;   1,2,3,4,6,7-hexahydrospiro[[1,4]diazepino[6,7,1-ij]quinoline-8,1′-cyclohexane];   1′,2′,3′,4′,6′,7′-hexahydrospiro[cyclobutane-1,8′-[1,4]diazepino[6,7,1-ij]quinoline;   9′-fluoro-1′,2′,3′,4′,6′,7′-hexahydrospiro[cyclobutane-1,8′-[1,4]diazepino[6,7,1-ij]quinoline];   7,8,8-trimethyl-1,2,3,4,7,8-hexahydro-6H-[1,4]diazepino[6,7,1-ij]quinoline];   9-fluoro-1-methyl-1,2,3,4,6,7-hexahydrospiro[[1,4]diazepino[6,7,1-ij]quinoline-8,1′-cyclobutane];   3-methyl-1′,2′,3′,4′,6′,7′-hexahydrospiro[cyclobutane-1,8′-[1,4]diazepino[6,7,1-ij]quinoline];   3-benzyl-2′,3′,7′,8′,9′,10′-hexahydro-1H-3′,8′, 10a′-triaza-cyclohepta[de]naphthalene;   2,3,5,6,7,8-Hexahydro-1H-[1,4]diazepino[1,7,6-de]quinoxaline;   1-Cyclobutyl-2,3,5,6,7,8-hexahydro-1H-[1,4]diazepino[1,7,6-de]quinoxaline;   1-Methyl-2,3,5,6,7,8-hexahydro-1H-[1,4]diazepino[1,7,6-de]quinoxaline;   1-(Oxetan-3-yl)-2,3,5,6,7,8-hexahydro-1H-[1,4]diazepino[1,7,6-de]quinoxaline;   1-(Cyclopropylmethyl)-2,3,5,6,7,8-hexahydro-1H-[1,4]diazepino[1,7,6-de]quinoxaline;   1-(Cyclopentylmethyl)-2,3,5,6,7,8-hexahydro-1H-[1,4]diazepino[1,7,6-de]quinoxaline;   Cyclopropyl(2,3,5,6,7,8-hexahydro-1H-[1,4]diazepino[1,7,6-de]quinoxalin-1-yl)methanone;   Cyclopentyl(2,3,5,6,7,8-hexahydro-1H-[1,4]diazepino[1,7,6-de]quinoxalin-1-yl)methanone;   1-Cyclopropyl-2,3,5,6,7,8-hexahydro-1H-[1,4]diazepino[1,7,6-de]quinoxaline;   1-Cyclopentyl-2,3,5,6,7,8-hexahydro-1H-[1,4]diazepino[1,7,6-de]quinoxaline;   1-Cyclopropyl-5-methyl-2,3,5,6,7,8-hexahydro-1H-[1,4]diazepino[1,7,6-de]quinoxaline;   6,6-Dimethyl-2,3,4,6,7,8-hexahydro-1H-[1,4]diazepino[6,7,1-ij]quinoline;   5,6,7,9,9a, 10,11,12,13,14-decahydro-4H-azepino[1,2-a][1,4]diazepino[1,7,6-de]quinoxaline;   7-Methyl-5,6,7,9,9a, 10,11,12-octahydro-4H-[1,4]diazepino[1,7,6-de]pyrrolo[1,2-a]quinoxaline;   1-Fluoro-7-methyl-5,6,7,9,9a, 10,11,12-octahydro-4H-[1,4]diazepino[1,7,6-de]pyrrolo[1,2-a]quinoxaline;   1,2,3,4,6,7-Hexahydrospiro[[1,4]diazepino[6,7,1-ij]quinoline-8,1′-cyclopropane];   4-Methyl-1,2,3,4,6,7-hexahydrospiro[[1,4]diazepino[6,7,1-ij]quinoline-8,1′-cyclopropane];   11-Fluoro-8,8-Dimethyl-2,3,4,6,7,8-hexahydro-1H-[l 1,4]diazepino[6,7,1-ij]quinoline;   1-Methoxy-8,8-dimethyl-2,3,4,6,7,8-hexahydro-1H-[1,4]diazepino[6,7,1-ij]quinoline;   4,8,8-Trimethyl-2,3,4,6,7,8-hexahydro-1H-[1,4]diazepino[6,7,1-ij]quinoline;   4-Ethyl-8,8-dimethyl-2,3,4,6,7,8-hexahydro-1H-[1,4]diazepino[6,7,1-ij]quinoline;   6,8,8-Trimethyl-2,3,4,6,7,8-hexahydro-1H-[1,4]diazepino[6,7,1-ij]quinoline;   8-ethyl-8-methyl-2,3,4,6,7,8-hexahydro-1H-[1,4]diazepino[6,7,1-ij]quinoline;   (R)-8-ethyl-8-methyl-2,3,4,6,7,8-hexahydro-1H-[1,4]diazepino[6,7,1-ij]quinoline;   (S)-8-ethyl-8-methyl-2,3,4,6,7,8-hexahydro-1H-[1,4]diazepino[6,7,1-ij]quinoline;   4-Methyl-1,2,3,4,6,7-hexahydrospiro[[1,4]diazepino[6,7,1-ij]quinoline-8,1′-cyclobutane];   1-Fluoro-5,6,7,9,9a, 10,11,12-octahydro-4H-[1,4]diazepino[1,7,6-de]pyrrolo[1,2-a]quinoxaline;   1-Bromo-5,6,7,9,9a, 10,11,12-octahydro-4H-[1,4]diazepino[1,7,6-de]pyrrolo[1,2-a]quinoxaline;   1-Methyl-5,6,7,9,9a, 10,11,12-octahydro-4H-[1,4]diazepino[1,7,6-de]pyrrolo[1,2-a]quinoxaline;   1-Cyclopropyl-5,6,7,9,9a, 10,11,12-octahydro-4H-[1,4]diazepino[1,7,6-de]pyrrolo[1,2-a]quinoxaline;   1-Cyclobutyl-5,6,7,9,9a, 10,11,12-octahydro-4H-[1,4]diazepino[1,7,6-de]pyrrolo[1,2-a]quinoxaline;   1-Cyclopentyl-5,6,7,9,9a, 10,11,12-octahydro-4H-[1,4]diazepino[1,7,6-de]pyrrolo[1,2-a]quinoxaline;   8-Methyl-2,3,4,6,7,8-hexahydro-1H-[1,4]diazepino[6,7,1-ij]quinolin-8-ol;   8-Methoxy-8-methyl-2,3,4,6,7,8-hexahydro-6H-[1,4]diazepino[6,7,1-ij]quinoline;   2,8-Dimethyl-2,3,4,6,7,8-hexahydro-1H-[1,4]diazepino[6,7,1-ij]quinolin-8-ol;   11-Methyl-1,2,3,4,6,7-hexahydrospiro[[1,4]diazepino[6,7,1-ij]quinoline-8,1′-cyclobutane];   9-Methyl-1,2,3,4,6,7-hexahydrospiro[[1,4]diazepino[6,7,1-ij]quinoline-8,1′-cyclobutane];   4,5,6,7,9,9a,9b,10,10a, 11-Decahydrocyclopropa[3,4]pyrrolo[1,2-a][1,4]diazepino[1,7,6-de]quinoxaline;   1-Ethyl-2,3,5,6,7,8-hexahydro-1H-[1,4]diazepino[1,7,6-de]quinoxaline;   1-Propyl-2,3,5,6,7,8-hexahydro-1H-[1,4]diazepino[1,7,6-de]quinoxaline;   1-Cyclobutyl-5-methyl-2,3,5,6,7,8-hexahydro-1H-[1,4]diazepino[1,7,6-de]quinoxaline;   5-Methyl-1-(oxetan-3-yl)-2,3,5,6,7,8-hexahydro-1H-[1,4]diazepino[1,7,6-de]quinoxaline;   1-Ethyl-5-methyl-2,3,5,6,7,8-hexahydro-1H-[1,4]diazepino[1,7,6-de]quinoxaline;   5-Methyl-1-propyl-2,3,5,6,7,8-hexahydro-1H-[1,4]diazepino[1,7,6-de]quinoxaline;   9-Chloro-1,2,3,4,6,7-hexahydrospiro[[1,4]diazepino[6,7,1-ij]quinoline-8,1′-cyclobutane];   10-Methyl-1,2,3,4,6,7-hexahydrospiro[[1,4]diazepino[6,7,1-ij]quinoline-8,1′-cyclobutane]; and   10-Chloro-1,2,3,4,6,7-hexahydrospiro[[1,4]diazepino[6,7,1-ij]quinoline-8,1′-cyclobutane];   or a stereoisomer or pharmaceutically acceptable salt thereof.   
     
     
         51 . A pharmaceutical composition comprising a therapeutically effective amount of at least one compound as claimed in  claim 1  or an N-oxide, a tautomeric form, a stereoisomer or a pharmaceutically acceptable salt thereof, or comprising at least one compound as defined in  claim 1  wherein at least one of the atoms has been replaced by its stable, non-radioactive isotope in combination with at least one pharmaceutically acceptable carrier and/or auxiliary substance. 
     
     
         52 .- 54 . (canceled) 
     
     
         55 . A method for treating disorders which respond to the modulation of the 5-HT 2c  receptor, which method comprises administering to a subject in need thereof at least one compound as defined in  claim 1  or an N-oxide, a tautomeric form, a stereoisomer or a pharmaceutically acceptable salt thereof. 
     
     
         56 . The method as claimed in  claim 55 , where the disorders are selected from the group consisting of damage of the central nervous system, disorders of the central nervous system, eating disorders, ocular hypertension, cardiovascular disorders, gastrointestinal disorders and diabetes. 
     
     
         57 . The method as claimed in  claim 56 , where the disorders are selected from the group consisting of bipolar disorder, depression, atypical depression, mood episodes, adjustment disorders, anxiety, panic disorders, post-traumatic syndrome, psychoses, schizophrenia, cognitive deficits of schizophrenia, memory loss, dementia of aging, Alzheimer's disease, behavioral disorders associated with dementia, social phobia, mental disorders in childhood, attention deficit hyperactivity disorder, organic mental disorders, autism, mutism, disruptive behavior disorder, impulse control disorder, borderline personality disorder, obsessive compulsive disorder, migraine and other conditions associated with cephalic pain or other pain, raised intracranial pressure, seizure disorders, epilepsy, substance use disorders, alcohol abuse, cocaine abuse, tobacco abuse, smoking cessation, sexual dysfunction/erectile dysfunction in males, sexual dysfunction in females, premenstrual syndrome, late luteal phase syndrome, chronic fatigue syndrome, sleep disorders, sleep apnoea, chronic fatigue syndrome, psoriasis, Parkinson's disease, spinal cord injury, trauma, stroke, pain, bladder dysfunction/urinary incontinence, encephalitis, meningitis, eating disorders, obesity, bulimia, weight loss, anorexia nervosa, ocular hypertension, cardiovascular disorders, gastrointestinal disorders, diabetes insipidus, diabetes mellitus, type I diabetes, type II diabetes, type III diabetes, diabetes secondary to pancreatic diseases, diabetes related to steroid use, diabetes complications, hyperglycemia and insulin resistance. 
     
     
         58 . The method as claimed in  claim 57 , where the disorders are selected from the group consisting of schizophrenia, depression, bipolar disorders, obesity and substance use disorders.