Process for the preparation of cephalosporin compounds and synthetic intermediates
US7355040B2 · kind B2 · utility
0Cited by
3References
20Claims
0Family size
Inventors
Key dates
| Filing date | Nov 22, 2004 |
| Grant date | Apr 8, 2008 |
| Priority date | — |
| Expiry date | Feb 15, 2026 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P20/55
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
There is provided a process for the preparation of a compound according to Formula (II):which includes the step of cyclizing a compound of Formula (III):wherein R1, R2, R3, R4, X and m have meanings which are given in the description.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.