Steroid anaesthetics of the pregnane and 19-norpregnane series
US3998829A · kind A · utility
44Cited by
7References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 8, 1973 |
| Grant date | Dec 21, 1976 |
| Priority date | — |
| Expiry date | May 8, 1993 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07J43/003
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Steroid anaesthetics of the pregnane and 19-norpregnane series are described, the compounds possessing a 3.alpha.-hydroxy group, a 5.alpha.-hydrogen atom or a 4,5-double bond, a 17.alpha.-hydrogen atom, a 20-oxo group and at the 21-position a hydrocarbon group which may be substituted by an oxo, ether, hydroxy, acyloxy, esterified carboxy, thioether, thioester, heterocyclic, amino or aromatic group, or a fluorine or chlorine atom. The acetals and 20-enol ethers of compounds having a 21-formyl group are also described.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.