Cephem derivatives and process for preparing them

Details Cephem derivatives and process for preparing them Cephem derivatives and process for preparing them

C - Chemistry, Metallurgy

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C07D 501/06 (2006.01) A61K 31/43 (2006.01) A61K 31/545 (2006.01) C07D 501/04 (2006.01) C07D 501/20 (2006.01) C07D 501/24 (2006.01) C07D 501/36 (2006.01) C07D 501/40 (2006.01) C07D 501/42 (2006.01) C07D 501/46 (2006.01) C07D 501/48 (2006.01) C07D 501/56 (2006.01) C07D 501/60 (2006.01) C07D 521/00 (2006.01) C07D 519/00 (2006.01)

Patent

CA 1040621

CEPHEM DERIVATIVES AND PROCESS FOR PREPARING THEM Abstract of the disclosure- Acylamino-cephem-carboxylic acids of the formula I Image in which R1, R and R3 represent hydrogen or alkyl, R1 and R2 or R2 and R3 together may form an alkylene radical which may be substi- tuted, X represents a single bond or NH, A represents a pheny- lene or thienylene radical which may be substituted, Y repre- sents a single bond or oxygen and Z represents a 5- or 6-mem- bered ring which may be substituted and which may be bound to an anellated ring system, and their physiologically tolerated salts and esters, a process for preparing these compounds and preparations containing them.

212430

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