The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 08, 1977
Filed:
Mar. 17, 1976
Connlab Holdings Limited, Ontario, CA;
Abstract
The invention relates to novel azetidinones of the general formula: ##STR1## wherein R stands for lower alkyl, phenyl, phenyloxyloweralkyl, phenylloweralkyl, 2-thiophenemethyl, 5-tetrazolylmethyl, R.sup.3 O--and R.sup.3 S--, wherein R.sup.3 stands for lower alkyl, phenyl or phenylloweralkyl; R.sup.1 is hydrogen or a cleavable radical selected from lower alkyl; loweralkoxymethyl, 2,2,2-trichloroethyl, benzyl, p-halobenzyl, p-nitrobenzyl and p-methoxybenzyl, benzhydryl and trimethylsilyl; R.sup.2 is hydrogen or methoxy; X is SCl, Sbr or --OH in which case the C.sub.3 -sidechain is better represented as the amide RCONH-- group; Y is chloro or bromo; and ##STR2## may also be taken as phthalimido. These novel compounds possess antibacterial activity and are useful intermediates for the synthesis of modified penicillins and the analogues of penicillins.