Patent AU-781551-B2 (AU)
Title: Novel heterocyclic compounds and their use as medicines
Inventor: AUVIN SERGE
IPC: A61P21/00
Filed: 2000-11-03
Granted: 2005-05-26
Abstract: N-heterocyclyl or heterocyclylalkyl secondary amines (I), as racemates, enantiomers and/or diastereoisomers, and their acid or base additional salts. N-heterocyclyl or heterocyclylalkyl secondary amines of formula (I), as racemates, enantiomers and/or diastereoisomers, and their acid or base additional salts, are new. A-X-NH-Y-Het(R 1>R 2>) (I) R 1>hydrogen, OR 3>, SR 3>, oxo or cyclic acetal; R 3>hydrogen, alkyl, aralkyl, heterocycloalkylcarbonyl, alkylcarbonyl, arylcarbonyl or aralkylcarbonyl, where alkyl, aryl and heterocycloalkyl are optionally substituted by one or more of alkyl, hydroxy, alkoxy, nitro, cyano, halo or NR 4>R 5>; R 4>and R 5>hydrogen or alkyl, or together complete an optionally substituted heterocycle; R 2>hydrogen, alkyl, aryl or aralkyl, with aryl optionally substituted by one or more of OR 6>, NR 7>R 8>, halo, cyano, nitro or alkyl; R 6>-R 8>hydrogen, alkyl, aryl, aralkyl, alkylcarbonyl, arylcarbonyl or aralkylcarbonyl; A : any of seven specified aryl or heterocyclic groups; X : (CH 2) n, (CH 2) nCO, N(R 4>5>)CO(CH 2) nCO, N(R 4>5>)CO-D-CO, CON(R 4>5>)D-CO, CO-D-CO, CH=CH-(CH 2) nCO, N(R 4>5>)-(CH 2) n-CO, N(R 4>5>)CO-C(R 4>6>R 4>7>)CO, O(CH 2) nCO, N(R 4>5>)CONH-C(R 4>6>R 4>7>)CO, CON(R 4>5>)-C(R 4>6>R 4>7>)CO, S(CH 2) nCO or Z-CO; D : phenylene, optionally substituted by one or more of alkyl, alkoxy, hydroxy, nitro, halo, cyano or carboxy, optionally as alkyl ester; Z : heterocycle; R 4>5>hydrogen or alkyl; R 4>6>and R 4>7>hydrogen, alkyl, aryl or aralkyl, optionally substituted by one or more of hydroxy, thiol, halo, nitro, alkyl, alkoxy, alkylthio, aralkoxy, aralkylthio, NR 4>8>R 4>9>or carboxy, optionally as alkyl ester; R 4>8>and R 4>9>hydrogen, alkyl or COR 5>0>, or together they complete optionally substituted heterocyclyl; R 5>0>hydrogen, alkyl, alkoxy or NR 5>1>R 5>2>; R 5>1>and R 5>2>hydrogen or alkyl, or together complete an optionally substituted heterocycle; n : 0-6; Y : (CH 2) p, C(R 5>3>R 5>4>)-(CH 2) pand C(R 5>3>R 5>4>)-CO; R 5>3>and R 5>4>hydrogen, alkyl or aralkyl, optionally where aryl is substituted with one or more of hydroxy, halo, nitro, alkyl, alkoxy or NR 4>8>R 4>9>; p : 0-6; Het : heterocycle; proviso: excluded are compounds in which Het : tetrahydrofuran or tetrahydropyran, R 1>= OR 3>, with R 3>= hydrogen, alkyl, aralkyl, heterocycloalkylcarbonyl (where heterocyclylalkyl is branched by an atom of carbon), alkylcarbonyl, arylcarbonyl or aralkylcarbonyl, R 2>= hydrogen, Y = bond, and X = CON(H)-CHR 4>7>-CO. The full definitions are given in the DEFINITIONS (Full Definitions) Field. Independent claims are also included for the following: (a) use of (I), and similar known compounds excluded by the proviso, for treating diseases associated with calpains and/or reactive oxygen species (ROS); and (b) 34 named new compounds that are intermediates for (I). ACTIVITY : Antiinflammatory; immunosuppressive; cardiovascular; neurological; osteopathic; cytostatic; virucide; ophthalmologic; cerebroprotective. When tested for inhibition of porcine calpain I (after BBRC, 248 (1998) 293), some (I) (none named) had IC 50below 5 MicroM. MECHANISM OF ACTION : Inhibition of calpain and/or scavenging of ROS.