Cephalosporins

Drug – bio-affecting and body treating compositions – Designated organic active ingredient containing – Heterocyclic carbon compounds containing a hetero ring...

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514206, 540222, 540223, 562470, 562444, C07D50124

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active

057122660

ABSTRACT:
A syn isomer in (R) or (S) form or a mixture thereof of a compound of the formula ##STR1## syn isomer, in the (R) or (S) form or in the form of an (R,S) mixture, in the form of an internal salt or their salts with organic or mineral acids wherein the substituents are defined as in the application having anti-bacterial properties.

REFERENCES:
patent: 4435419 (1984-03-01), Epstein et al.
Effenberger;Tetrahedron Lett.;31(9), pp. 1249-1252, 1990.
Pettersson et al; J. Pharm.Bioed.Anal.;4(2), pp. 221-235, 1986.
Musser et al; J.Med.Chem.,33(1) pp. 240-245, 1990.
Chenevert et al; Can.J.Chem., 68(2), pp. 314-316, 1990.

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