| abstract |
The present invention relates to cephalosporin derivatives of the general formula <CHEM> wherein X is CH or N; R<1> is hydrogen or cyclopentyl; R<2> is a group of formula <CHEM> R<3> is hydrogen, an alkalimetal ion or a tertiary ammonium group; R<4> is hydrogen, an amino protecting group, pyrrolidin-2-ylmethyl, azetidin-3-ylmethyl, iminomethyl, 1-carbamimidoyl; R<5> is hydrogen, dialkylcarbamoyl, omega -hydroxyalkyl, omega -aminoalkyl, pyridinium-1-ylmethyl, 1-hydroxy-3-aminomethyl-propyl or (hydroxy)-(pyrrolidin-2-yl)methyl; R<6> is hydrogen, trifluoromethyl or hydroxy; and R<7> is alkyl, omega -hydroxy-alkyl, cycloalkyl, 3-pyrrolidinyl, 3-azetidinyl, iminomethyl or 1-carbamimidoyl; as well as readily hydrolyzable esters thereof, pharmaceutically acceptable salts of said compounds and hydrates of the compounds of formula I and of their esters and salts; the invention is further concerned with the manufacture of compounds of formula I; with their use as pharmaceutically active substances, particularly for the treatment and prophylaxis of infectious diseases, and with pharmaceutical preparations containing a compound of formula I for the treatment and prophylaxis of infectious diseases. |