Drug – bio-affecting and body treating compositions – Designated organic active ingredient containing – Heterocyclic carbon compounds containing a hetero ring...
Patent
1991-07-23
1993-04-06
Schenkman, Leonard
Drug, bio-affecting and body treating compositions
Designated organic active ingredient containing
Heterocyclic carbon compounds containing a hetero ring...
A61K 3143
Patent
active
052004031
ABSTRACT:
Compounds of the formula I ##STR1## wherein R' is a free or esterified carboxy group or a carboxylate anion and R.sup.2 is an organic group have beta-lactamase inhibition activity. A process for the preparation of the same and pharmaceutical compositions containing these compounds are provided.
REFERENCES:
patent: 4656263 (1987-04-01), Kellogg
patent: 4847247 (1989-07-01), Thompson et al.
Tetrahydron Letters, vol. 27, pp. 4857-4860, 1986.
Alpegiani Marco
Hanessian Stephen
Meinardi Giuseppe
Perrone Ettore
Farmitalia Carlo Erba S.r.l.
Schenkman Leonard
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