| abstract |
The present invention provides novel cephalosporin compounds of formula (1), pharmaceutically acceptable non-toxic salts thereof, physiologically hydrolysable esters, hydrates, solvates and isomers thereof, pharmaceutical compositions containing them and their preparation It's about how:n n n n n n n n n n Wheren n n R 1 , R 2 , R 3 , Z, Q, n and Ar each have the meaning defined in the specification. |