| abstract |
THE PRESENT INVENTION CONCERNS A DERIVATIVE OF CEPHALOSPORIN. THIS COMPOUND IS REPRESENTED BY THE GENERAL FORMULA: (CF DRAWING IN BOPI) IN WHICH R REPRESES A GROUP REPRESENTED BY THE FORMULA: (CF DRAWING IN BOPI) (IN WHICH R IS A HYDROGEN OR AN ALCOHOL LESS THAN 1 TO 3 ATOMS OF CARBON AND R IS A HYDROGEN, AN ALCOYL LESS THAN 1 TO 3 ATOMS OF CARBON, A PHENYL WHICH CAN BE SUBSTITUTED BY AN AMINO OR HYDROXY, A CYANO, A CARBOXY OR A CARBOXYMETHYL; THE SAID R AND R MAY FORM A 4 CYUPEIDCYLATOMETHYL GROUP 6 CARBON TOGETHER WITH THE CARBON TO WHICH THEY ARE BOUND) OR A GROUP REPRESENTED BY THE -CH-R FORMULA (IN WHICH R REPRESENTS A HYDROGEN, A HALOGENOMETHYL, A CARBAMOYL, A CARBOXYMETHOTHYL, A CARBOXY-ISZ-3-HYDROXY-3-HYDROXY 5-THIOMETHYL OR A CARBOXYPHENYL-2-THIOMETHYL); R REPRESENTS THE GROUP REPRESENTED BY THE FORMULA: (CF DRAWING IN BOPI) (IN WHICH R REPRESENTS A CARBOXY, A CYANO OR A CARBAMOYL WHICH CAN BE SUBSTITUTED BY AN ALCOYL LESS THAN 1 TO 3 ATOMS OF CARBON AND R REPRESENTS A HYDROXY OR A HYDROXY ) OR THE GROUP REPRESENTED BY THE FORMULA: (CF DRAWING IN BOPI) (IN WHICH R AND R HAVE THE SAME MEANING AS ABOVE); AND THE WAVE REPRESENTS A CIS OR SYN LINK AND THEIR SALTS. THE COMPOUND IS EFFECTIVE AGAINST GRAM-NEGATIVE BACTERIA AND GRAM-POSITIVE BACTERIA. |