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. 02, 1997
Filed:
Aug. 15, 1995
Shigeru Torii, Okayama, JP;
Hideo Tanaka, Okayama, JP;
Mitio Sasaoka, Tokushima, JP;
Takashi Shiroi, Tokushima, JP;
Yutaka Kameyama, Okayama, JP;
Otsuga Kagaku Kabushiki Kaisha, Osaka-shi, JP;
Abstract
The object of the invention is to provide a .beta.-lactam compound and a 2-substituted methyl-3-cephem compound, both of which are of value as intermediates for the synthesis of cephem antibiotics. The .beta.-lactam compound of the invention may be represented by the general formula ##STR1## wherein R.sup.1 represents a protected amino group, for instance; R.sup.2 represents hydrogen, for instance; R.sup.3 represents hydrogen or a carboxy-protecting group; R.sup.4 represents an aryl group which may be substituted; R.sup.5 represents an alkenyl group which may be substituted, for instance. The 2-substituted methyl-3-cephem compound of the invention may be represented by the general formula ##STR2## wherein R.sup.1, R.sup.2 and R.sup.3 are as defined above; R.sup.6 represents an aryl group which may be substituted.