Penicillin derivatives
US4496484A · kind A · utility
5Cited by
5References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 22, 1983 |
| Grant date | Jan 29, 1985 |
| Priority date | — |
| Expiry date | Apr 22, 2003 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D499/00
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
This invention provides a penicillin derivative of the formula and a salt thereof ##STR1## wherein X represents chlorine atom or bromine atom and R represents hydrogen atom or penicillin carboxy-protecting radical, and a process for preparing the derivative of the formula (I) and a salt thereof by reacting a compound of the formula ##STR2## wherein R is as defined above with a chlorinating reagent or brominating reagent and, when required, forming a salt thereof.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.