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:
Oct. 23, 1979
Filed:
Dec. 15, 1977
Connlab Holdings Limited, , CA;
Abstract
Thiazolineazetidinone derivatives of the formulae 1,2, and 3. ##STR1## wherein R is derived from the commonly known carboxamido groups present in penicillins, R.sup.1 is a carboxy protecting group commonly used in penicillin chemistry, and R.sup.2 is Cl, Br, I, CN, lower alkoxy, lower acyloxy, SCN, SCH.sub.3, S-phenyl, S-heteroaryl such as 5-mercaptotetrazole or 2-mercapto-5-methyl-1,3,4-thiadiazole, NO.sub.3, N.sub.3, NH-phenyl, and N(CH.sub.3).sub.2 with the proviso that R.sup.2 in the compounds of formula 1 is limited to Cl, Br, I, and lower acyloxy, and a process for preparing said compounds from 2-(substituted methyl) penicillin sulfoxides followed by treatment with a base. The compounds of formulae 1,2, and 3 are useful as intermediates in the synthesis of cephalosporins.