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:
Jul. 27, 1993
Filed:
Apr. 12, 1991
Shiro Terashima, Tokyo, JP;
Yoshio Ito, Sagamihara, JP;
Takeo Kawabata, Sagamihara, JP;
Kunikazu Sakai, Tokyo, JP;
Tamejiro Hiyama, Sagamihara, JP;
Yoshikazu Kimura, Sagamihara, JP;
Makoto Sunagawa, Itami, JP;
Katsumi Tamoto, Toyonaka, JP;
Akira Sasaki, Ibaraki, JP;
Sumitomo Pharmaceuticals Company, Limited, Osaka, JP;
Abstract
A compound of the formula: ##STR1## wherein R.sub.1, R.sub.2, R.sub.3 and R.sub.4 are each a hydrogen atom, a lower alkyl group, an ar(lower)alkyl group or an aryl group, or R.sub.1 and R.sub.2 may be combined together to form a lower alkylene group and/or R.sub.3 and R.sub.4 are combined together to form a lower alkylene group, or R.sub.1, R.sub.2, R.sub.3 and R.sub.4 may be combined together to form an o-phenylene group, X is a halogen atom and Y is an oxygen atom or a nitrogen atom substituted with lower alkyl or aryl, which is useful as an intermediate in the synthesis of 1.beta.-methylcarbapenem compounds valuable as antibiotics.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile