New azabicyclic derivative useful to treat e.g. cognitive deficits associated with brain aging, neurodegenerative diseases, mood disorders, epileptic seizure and attention deficit hyperactivity syndrome, are histamine activators

摘要

Azabicyclic derivatives (I) are new. Azabicyclic derivatives of formula (I) and their enantiomers, diastereoisomers or acid or base addition salts are new. ALK : alkylene, 2-6C alkenylene (contains 1-3 double bonds) or 2-6C alkynylene (contains 1-3 triple bonds); Y, Y 1 : H, halo, alkyl, alkoxy, alkylthio, alkylsulfinyl, alkylsulfonyl, SH, OH, perhaloalkyl, nitro, amino (optionally substituted by one or two alkyl), acyl of formula C(O)R1a, aminocarbonyl (optionally N-substituted by one or two alkyl), acylamino (optionally N-substituted by alkyl), alkoxycarbonyl, COOH, sulfo or CN; R1a : H or alkyl; X : O, S or NR; R : H or alkyl; W 1 : CN (only when X = O or NR), N(R 1)Z 1R 2or Z 1NR 1R 2; Z 1 : C(O), C(S), C(NR 4), C(O)N(R 3), C(S)N(R 3), C(NR 4)N(R 3), C(O)O, C(S)O or S(O) r; r : 1 or 2; Z 2 : C(O), C(S), C(NR 4), S(O) ror bond; R 1-R 4 : alkyl, 3-6C alkenyl (contains 1-3 double bonds), 3-6C alkynyl (contains 1-3 triple bonds), cycloalkyl, heterocycloalkyl, aryl or heteroaryl (all optionally substituted), alkoxy or H; or R 1+R 2or R 2+R 3 : heterocyclyl or heteroaryl (both optionally substituted); m, n : 0-2, where the sum of m+n is 2 or 3; and p, q : 0-2. alkyl = 1-6C unless specified; perhaloalkyl = 1-3C with 1-7 halogen; aryl = phenyl, naphthyl, indanyl, indenyl, dihydronaphthyl or tetrahydronaphthyl; cycloalkyl = 3-11 membered mono- or bi-cyclic ring system, optionally with 1 or 2 unsaturations; heterocyclyl = 4-11 membered mono- or bicyclic ring system optionally with 1 or 2 unsaturations and/or 1-4 heteroatoms from N, O and/or S; heteroaryl = 5-11 membered mono- or bicyclic ring system with 1-4 heteroatoms from N, O and/or S; for cycloalkyl, aryl, heteroaryl or heterocyclyl, 'optionally substituted' comprises 1-3 substituents from alkyl, alkoxy, alkylthio, alkylsulfinyl, alkylsulfonyl, halogen, OH, SH, perhaloalkyl, nitro, amino or aminocarbonyl (optionally substituted by 1 or 2 alkyl), C(O)R1a, NHC(O)R1a (optionally N-substituted by alkyl), alkoxycarbonyl, COOH, sulfo or CN; or aryl, heteroaryl, cycloalkyl, heterocyclyl or benzyl with one or two optional oxo substituents where possible; for alkyl, alkenyl or alkynyl, 'optionally substituted ' comprises one or two of alkylthio, alkylsulfinyl, alkylsulfonyl, alkoxy, halogen, OH, SH, nitro, amino, C(O)R1a, aminocarbonyl, NHC(O)R1a, alkoxycarbonyl, COOH, sulfo, CN or aryl, heteroaryl, cycloalkyl, heterocylyl or aryloxy (all optionally substituted). An independent claim is included for the preparation of (I). [Image] ACTIVITY : Nootropic; Neuroprotective; Anticonvulsant; Tranquilizer; Anorectic; Analgesic. MECHANISM OF ACTION : Histamine (H3) activator. The ability of (I) to activate histamine was tested in mice. The results showed that 4-(3-hexahydrocyclopenta[c]-pyrrol-2(1H)-ylpropoxy)benzonitrile oxalate exhibited the percentage increase of N-methylhistamine in brain of 92%.