C - Chemistry – Metallurgy – 07 – D
Patent
C - Chemistry, Metallurgy
07
D
260/104, 167/187
C07D 501/46 (2006.01) A61K 31/545 (2006.01) C07D 501/00 (2006.01) C07D 501/18 (2006.01) C07D 501/34 (2006.01) C07D 501/38 (2006.01) C07D 501/56 (2006.01)
Patent
CA 1275285
New cephalosporins and processes for their preparation ABSTRACT Antibacterially effective cephalosporins of the formula Image in which R1 denotes C1-C6-alkyl, phenyl or halogen- substituted phenyl and A represents a nitrogen-containing, positively charged heterocyclic 5-membered to 7-membered ring which is bonded via N and can contain a total of up to 4 hetero-atoms from the group comprising N, O and S, and onto which up to two further rings can be fused, and which can optionally be substi- tuted, with the proviso that, if the ring is a 6- membered ring, A does not represent an unsubstitu- ted pyridine ring or a pyridine ring which is mono- or di-substituted by identical or different substituents from the group comprising C1-C4- alkyl, chlorine, bromine, carbamoyl or N-C1-C4- alkylcarbamoyl, or pharmaceutically acceptable salts thereof or esters thereof which can be split under physiological conditions.
468785
Angerbauer Rolf
Boberg Michael
Metzger Karl G.
Zeiler Hans-Joachim
Aktiengesellschaft Bayer
Angerbauer Rolf
Boberg Michael
Fetherstonhaugh & Co.
Metzger Karl G.
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