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:
Dec. 30, 1997
Filed:
Jun. 05, 1995
Tanabe Seiyaku Co., Ltd., Osaka, JP;
Abstract
Novel process for preparing azetidinone compound of the formula �III!: ##STR1## wherein R.sup.1 is H or lower alkyl, R.sup.2 and R.sup.3 combine together with the adjacent nitrogen to form heterocyclic group, and R.sup.4 is protected or unprotected hydroxy-substituted lower alkyl, which comprises reacting an alkanamide compound of the formula �I!: ##STR2## wherein R.sup.1, R.sup.2 and R.sup.3 are the same as defined above, with a compound of the formula �II!: ##STR3## wherein L.sup.1 is a leaving group and R.sup.4 is the same as defined above, in the presence of a base, said compound �Ill! being useful as synthetic intermediate for 1-methylcarbapenem derivative having excellent antibacterial activity.