Therapeutically useful oxygen derivatives of 3,7a-diazacyclohepta[j,k]fluorenes
US4425351A · kind A · utility
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8Claims
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Key dates
| Filing date | Dec 2, 1982 |
| Grant date | Jan 10, 1984 |
| Priority date | — |
| Expiry date | Dec 2, 2002 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61P25/28
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
Compounds of the general formula: ##STR1## wherein R.sub.1 represents hydrogen, chlorine or methoxy, R.sub.2 represents hydrogen, methyl or benzyl, and R.sub.3 and R.sub.4 represent hydrogen, or R.sub.3 represents methyl and R.sub.4 represents hydrogen, or R.sub.3 represents hydrogen and R.sub.4 represents methyl, with the exception of those compounds wherein R.sub.1, R.sub.3 and R.sub.4 each represent a hydrogen atom simultaneously, are new therapeutically useful compounds; they possess an antianoxic activity.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.