Cephalosporin antibiotics

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

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Details

514206, 540225, 540222, 540221, C07D50134, A61K 31545

Patent

active

055234003

ABSTRACT:
The present invention relates to compounds of the formula ##STR1## wherein R.sup.1 is an acyl group derived from a carboxylic acid, hydrogen, or an amino protecting group;

REFERENCES:
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patent: 4496562 (1985-01-01), Takaya et al.
patent: 5064649 (1991-11-01), Burton et al
patent: 5089491 (1992-02-01), Kamiya et al.
patent: 5171854 (1992-12-01), Scmidt et al.

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