Process and intermediates for chiral epoxides
US5256807A · kind A · utility
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Key dates
| Filing date | May 12, 1992 |
| Grant date | Oct 26, 1993 |
| Priority date | — |
| Expiry date | May 12, 2012 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D303/48
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Chiral epoxybutyrates are prepared in high yield from novel dihydro-3R-substituted sulfonyloxy-4R-hydroxy-2-(3H)furanones via based catalyzed alcoholysis. The product chiral epoxy butyrates are useful intermediates for the synthesis of 1-carba-1-dethia cephem antibiotics.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.