| abstract |
The subject of the present invention is a process for preparing new oximes derived from 7-amino thiazolyl acetamido cephalosporanic acid of general formula (I): <IMG> (I) in which R represents a hydrogen atom, R 'represents a hydrogen atom, or a saturated or unsaturated alkyl radical having from 1 to 4 carbon atoms, A represents either a hydrogen atom or an equivalent of an alkali metal, alkaline earth metal, of magnesium or of an amino organic base, the wavy line means that the group OR 'is in the syn position. These new oximes have antibiotic properties. |