.beta.-lactam antibiotics, their production, and their...

Details .beta.-lactam antibiotics, their production, and their... .beta.-lactam antibiotics, their production, and their...

C - Chemistry, Metallurgy

07

D

260/102, 260/111

C07D 499/70 (2006.01) C07D 233/38 (2006.01) C07D 277/20 (2006.01) C07D 277/48 (2006.01) C07D 499/00 (2006.01) C07D 501/24 (2006.01) C07D 501/57 (2006.01)

Patent

CA 1135687

New B-Lactam antibiotics, their production, and their medicinal use ABSTRACT B-Lactam compounds of the formula Image in which B denotes an optionally substituted heterocyclic 5-membered or 6-membered ring or an optionally sub- stituted phenyl ring, Z denotes a hydrogen atom or a C1 to C4 alkoxy group, Image , Image , Image or Image Y, E1 and E2 independently of one another denote a divalent organic radical and R1, R2, R3 and R4 independently of one another denote a hydrogen atom or an alkyl, alkenyl, alkinyl, alkadien- yl, cycloalkyl, cycloalkenyl, cycloalkadienyl, aryl or heterocyclyl radical, it also being possible for the above-mentioned radicals, with the exception of hydro- gen, to be substituted, or an acyl radical, are antibacterial agents with a broad antibacterial spectrum and are useful as agents for promoting growth and for improving feed utilisation in animals and as antioxidants.

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