Processes for preparation of 9,11-epoxy steroids and intermediates useful therein
US6953851B2 · kind B2 · utility
0Cited by
14References
16Claims
0Family size
Assignee
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Key dates
| Filing date | Sep 26, 2003 |
| Grant date | Oct 11, 2005 |
| Priority date | — |
| Expiry date | Sep 26, 2023 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC12Q1/02
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Multiple novel reaction schemes, novel process steps and novel intermediates are provided for the synthesis of epoxymexrenone and other compounds of Formula I wherein: —A—A—, —B—B—, R1, R3, R8 and R9 are as defined in the specification.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.