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US 4,048,320 AGranted
Penicillins
AssigneeBeecham Group Limited
InventorsJohn Peter Clayton, Peter Hubert Bentley
Life of this patent
Estimating the term…
Abstract
A class of 6-methoxy-.alpha.-carboxy penicillins have antibacterial activity against a wide range of Gram-negative organisms.
Claims7
A compound of formula (I):
- ##STR18## where R is 2- or 3- thienyl and R.sup.1 is hydrogen or a pharmaceutically acceptable salting ion and R.sup.2 is hydrogen, or a pharmaceutically acceptable salting ion or conventional pharmaceutically acceptable hydrolysable ester radical.
Dependencies are inferred from the claim text.