Vincamine derivatives and process for the preparation of vincamine and derivatives thereof
US3937709A · kind A · utility
10Cited by
3References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 15, 1973 |
| Grant date | Feb 10, 1976 |
| Priority date | — |
| Expiry date | Jun 15, 1993 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D461/00
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
New compounds having the formula ##SPC1## In which Y represents a hydrogen atom, in which case Z.sub.1 and Z.sub.2 represent simultaneously an oxygen atom, or Z.sub.1 represents a methoxycarbonyl radical and Z.sub.2 a hydroxy radical, or Y and Z.sub.2 form together a carbon-carbon bond and Z.sub.1 is a methoxycarbonyl radical, said compounds being additionally characterized by a cis-fusion of the D/E rings. Said new compounds and vincamine and certain of its derivatives are prepared from an enamine having the formula: ##SPC2## In which R is H or C.sub.2 H.sub.5.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.