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US 4,488,994 AGranted
Bis-esters of methanediol with penicillins and penicillanic acid 1,1-dioxide
AssigneePfizer Inc.
InventorEric C. Bigham
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Abstract
6'-Acylaminopenicillanoyloxymethyl esters of penicillanic acid 1,1-dioxide are useful as antibacterial agents. The 6'-aminopenicillanoyloxymethyl ester, halomethyl esters, alkylsulfonyloxymethyl esters and arylsulfonyloxymethyl esters of penicillanic acid 1,1-dioxide are all useful intermediates for the aforesaid antibacterial agents.
Claims1
The 4-toluenesulfonate salt of 6'-(2-amino-2-phenylacetamido)penicillanoyloxymethyl penicillanate 1,1-dioxide.
Dependencies are inferred from the claim text.