16.alpha.-methylation process
US4990612A · kind A · utility
18Cited by
12References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 5, 1988 |
| Grant date | Feb 5, 1991 |
| Priority date | — |
| Expiry date | Dec 5, 2008 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07J71/0015
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Disclosed is a process for the production of a .DELTA..sup.17(20) -steroid of the formula ##STR1## which comprises starting with a 16-unsaturated corticoid of the formula ##STR2## and contacting the 16-unsaturated corticoid (I) with a methylating agent in the presence of a copper catalyst and a silylating agent.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.