| 摘要 |
Pyrimido- and imidazo-pyridoindole derivatives, in the form of racemates or optically active isomers, of formula: <IMAGE> (I) in which n=0 or 1, R1=H, Hal, alkyl or alkoxy or CF3, R2=H, alkyl, cycloalkyl-alkyl, cycloalkyl, N,N-dialkylaminoalkyl or phenyl, R3=H or alkyl and R4=H, alkyl or benzyl are useful as anti-anoxia or psychotropic agents in therapy. They are prepared by cyclizing a compound of formula: <IMAGE> (II) wherein R5 is alkyl, by heating it in an acidic medium, such as ethanolic hydrogen chloride.
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