Patent ID: 7320980

Claim:
A pyrido[1,2-a]pyrimidine compound corresponding to formula I wherein R 1 and R 2 , mutually independently, in each case denote hydrogen, halogen or a linear or branched, optionally at least monosubstituted, alkyl residue, and R 3 denotes an optionally at least monosubstituted, monocyclic aryl or heteroaryl residue, which is optionally fused with an optionally at least monosubstituted monocyclic or polycyclic ring system optionally comprising at least one heteroatom as a ring member, or a physiologically acceptable salt thereof, provided that the following compounds are excluded: compounds corresponding to formula I, wherein R 1 and R 2 denote hydrogen and a methyl residue or wherein R 1 and R 2 denote hydrogen and R 3 denotes a phenyl residue which is unsubstituted or monosubstituted with a methyl residue, methoxy residue, Cl or Br, and their hydroperchlorate salts, and the following compounds and their hydroperchlorate salts: (3,4-dihydro-9-methyl-2H-pyrido[1,2-a]pyrimidin-3-yl)(3,4-dimethoxyphenyl)-methanone, (3,4-dihydro-6-methyl-2H-pyrido[1,2-a]pyrimidin-3-yl)(3,4-dimethoxyphenyl)-methanone, (3,4-dihydro-2H-pyrido[1,2-a]pyrimidin-3-yl)(3,4-dimethoxyphenyl)-methanone and (3,4-dichlorophenyl)(3,4-dihydro-2H-pyrido[1,2-a]pyrimidin-3-yl)-methanone.