Process for preparing sodium cefoxitin
US7605256B2 · kind B2 · utility
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6Claims
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Key dates
| Filing date | Jun 21, 2006 |
| Grant date | Oct 20, 2009 |
| Priority date | — |
| Expiry date | Oct 19, 2027 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D501/00
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Cefalotin is methoxylated in position 7α, desacetylated and then carbamoylated in position 3, to provide acid cefoxitin without any isolation of intermediate products. The acid cefoxitin is then transformed into the sodium salt by means of ion exchange resin.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.