Process for preparation of cefdinir
US6093814A · kind A · utility
5Cited by
0References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 18, 1998 |
| Grant date | Jul 25, 2000 |
| Priority date | — |
| Expiry date | May 18, 2018 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61P31/04
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
The present invention relates to a novel crystalline cefdinir intermediate having formula (II) which can be used very usefully for preparing a cephalosporin antibiotics, cefdinir, in which Ph represents phenyl, p-TsOH represents p-toluenesulfonic acid, and DMAC represents N,N-dimethylacetamide, to a process for preparation thereof and to a process for preparing cefdinir using the compound of formula (II). ##STR1## According to the present invention, cefdinir can be prepared in an excellent color and purity and with a good yield.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.