Derivatives of cephalosporins substituted in 3 position by a thiomethyl heterocycle group; and pharmaceutical compositions containing them
US4609654A · kind A · utility
8Cited by
3References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 23, 1982 |
| Grant date | Sep 2, 1986 |
| Priority date | — |
| Expiry date | Nov 23, 2002 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61P31/04
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The present invention relates to new cephalosporins of general formula ##STR1## in which R.sub.1 =R.sub.2 =CH.sub.3 or R.sub.1 and R.sub.2 together form a 1,3-propylene group, A is H, a cation, an ester or a hemiacetal, and R.sub.3 is a heterocycle comprising five or six atoms including at least one atom in the ring of nitrogen. It also relates to a process for preparing these cephalosporins and to the drugs containing them.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.