| abstract |
CEPHALOSPORANIC ACID DERIVATIVES, METHODS FOR THEIR PREPARATION AND PHARMACEUTICAL COMPOSITION IN CONTAINING THEM. THE INVENTION RELATES TO NEW CEPHALOSPORIN DERIVATIVES OF FORMULA: (CF DESIGN IN BOPI) OR R IS A GROUP OF FORMULA: (CF DESIGN IN BOPI) OR R IS H, AN AMINO OR AMINO PROTEGE GROUP; R AND R EACH H, A HALOGEN, A LOWER OR ARYLTHIO ALCOXY GROUP, Z IS N OR CH, R IS H OR A LOWER ALCOXY GROUP, R IS H OR A LOWER ALKYL GROUP, R IS ESPECIALLY H OR A HALOGEN, R IS A CARBOXY OR ITS GROUP |