Blood oxygenating and cerebral vasoregulating 20,21-dinoreburnamenines
US4501740A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 21, 1982 |
| Grant date | Feb 26, 1985 |
| Priority date | — |
| Expiry date | Sep 21, 2002 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61P9/00
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Novel 20,21-dinoreburnamenines of the formula ##STR1## wherein R is selected from the group consisting of hydrogen, alkyl of 1 to 4 carbon atoms and .dbd.CH.sub.2, the wavy line connecting to the E ring being a single bond when R is hydrogen or alkyl of 1 to 4 carbon atoms or a double bond when R is .dbd.CH.sub.2 and the dotted line being possibly an endo carbon-carbon bond when R is hydrogen or alkyl of 1 to 4 carbon atoms and their non-toxic, pharmaceutically acceptable acid addition salts in all their possible isomers forms, racemic mixtures and optical isomers having oxygenating and cerebral vasoregulating activity of great value and a novel process and intermediates for their preparation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.