Pyrimido- and imidazo-pyridoindole derivatives
US4358451A · kind A · utility
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Key dates
| Filing date | Jan 15, 1980 |
| Grant date | Nov 9, 1982 |
| Priority date | — |
| Expiry date | Jan 15, 2000 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D471/14
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
Pyrimido- and imidazo-pyridoindole derivatives, in the form of racemates or optically active isomers, of formula: ##STR1## in which n=0 or 1, R.sub.1 =H, Hal, alkyl or alkoxy or CF.sub.3, R.sub.2 =H, alkyl, cycloalkyl-alkyl, cycloalkyl, N,N-dialkylaminoalkyl or phenyl, R.sub.3 =H or alkyl and R.sub.4 =H, alkyl or benzyl are useful as anti-anoxia or psychotropic agents in therapy. They are prepared by cyclizing a compound of formula: ##STR2## wherein R.sub.5 is alkyl, by heating it in an acidic medium, such as ethanolic hydrogen chloride.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.