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US 4,377,524 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.
Claims3
The compound of the formula ##STR11## and the acid-addition salts thereof.
A compound of the formula ##STR12## wherein X is selected from the group consisting of chloro, bromo, iodo, alkylsulfonyloxy having from one to four carbons, benzenesulfonyloxy and toluenesulfonyloxy.
Dependencies are inferred from the claim text.