Substituted-ureido derivatives of penam 3-carboxylic acid and ce

Details Substituted-ureido derivatives of penam 3-carboxylic acid and ce Substituted-ureido derivatives of penam 3-carboxylic acid and ce

1973-03-22

1976-05-04

Gallagher, R.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260243C, 424246, 424271, C07D49964, C07D50160

Patent

active

039548023

ABSTRACT:
6-Acylamino-penam-3-carboxylic acids and 7-acylamino-3-cephem-4-carboxylic acids in which the acyl group has the formula ##EQU1## 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: 3481922 (1969-12-01), Holdrege
patent: 3483188 (1969-12-01), McGregor
patent: 3579501 (1971-05-01), McGregor

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