7.alpha. Ureido cephem-4-carboxylic acid derivatives

Details 7.alpha. Ureido cephem-4-carboxylic acid derivatives 7.alpha. Ureido cephem-4-carboxylic acid derivatives

1975-12-19

1978-09-19

Daus, Donald G.

Drug, bio-affecting and body treating compositions

Antigen, epitope, or other immunospecific immunoeffector

Bacterium or component thereof or substance produced by said...

544 22, 544 28, 544 30, A61K 31545, C07D50128

Patent

active

041155661

ABSTRACT:
6-Acylamino-penam-3-carboxylic acids and 7-acylamino-3-cephem-4-carboxylic acids in which the acyl group has the formula ##STR1## in which R.sub.1 is hydrogen, R.sub.2 is optionally substituted phenyl, thienyl or furyl, or R.sub.1 and R.sub.2 together are optionally substituted cycloalkyl, and B is a radical which is bonded via a sulphur atom or is bonded to oxygen or sulphur with the interposition of an optionally substituted CH.sub.2 -group.

REFERENCES:
patent: 3687949 (1972-08-01), Holdrege
patent: 3925368 (1975-12-01), Cooper et al.
patent: 4015000 (1977-03-01), Kocsis et al.

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