7-D-(.alpha.-Acylamino-arylacetamido)-cephalosporanic acid derivatives
US4058610A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 3, 1976 |
| Grant date | Nov 15, 1977 |
| Priority date | — |
| Expiry date | Sep 3, 1996 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D265/32
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Novel antibacterial agents; namely, 7-(.alpha.-acylamino-arylacetamido)-cephalosporanic acid derivatives having the formula: ##STR1## wherein R.sup.1 is thienyl, 2-furyl, phenyl, substituted thienyl or substituted phenyl; R is hydroxyl; R.sup.2 is hydrogen, hydroxy, acetoxy, carbamoyloxy, N-pyridyl, azido or heterocyclic thio group; R and R.sup.2 when taken together represent an oxygen atom; R.sup.3 is sulpho or COOR.sup.4' wherein R.sup.4' is hydrogen or R.sup.4 wherein R.sup.4 is lower alkyl, 5-indanyl, naphthyl, phenyl, or substituted phenyl, CONR.sup.5 R.sup.6, wherein each of R.sup.5 and R.sup.6 is hydrogen, lower alkyl or cycloalkyl; or R.sup.5 and R.sup.6 together with the nitrogen atom to which they are attached form a saturated heterocyclic group; X is oxygen or sulphur, a direct link, carbonyl, methylene, hydroxymethylene, sulphinyl, sulphonyl or an imino group of the formula --NR.sup.7 --, wherein R.sup.7 is hydrogen, lower alkyl, lower alkenyl, or benzyl; and each of alk.sup.1 and alk.sup.2 is a divalent saturated aliphatic hydrocarbon group containing from 1 to 3 carbon atoms; the pharmaceutically acceptable salts thereof, and methods for their preparation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.