Peptide substituted penicillins

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

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435 43, 530331, 540334, A61K 3143, C07D49948

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active

047229241

ABSTRACT:
A compound of formula I or a physiologically acceptable salt thereof ##STR1## wherein X represents sulphur or methylene, R.sub.1 represents hydrogen, amino or an acylated or carbamylated amino group, R.sub.2 represents hydrogen or an alkyl group and R.sub.3 represents an alkoxy group.

REFERENCES:
patent: 3142673 (1964-07-01), Hobbs
patent: 3466275 (1969-09-01), Morin et al.
J. E. Baldwin et al., J.C.S. Chem. Comm., 1980, 1271-1273.
J. E. Baldwin et al., J.C.S. Chem. Comm., 1981, 246-247.
J. E. Baldwin et al., J.C.S. Chem. Comm., 1981, 917-919.
Shields et al., Helvetica Chimica Acta-vol. 67, Fasc 3, (1984), NR 97, pp. 870-875.
J. E. Baldwin et al., J.C.S. Chem. Comm., (1983), 1317-1320.

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