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:
Feb. 26, 1991
Filed:
Sep. 19, 1988
Takeo Yoshioka, Ayase, JP;
Noritaka Chida, Sagamihara, JP;
Azuma Watanabe, Yokohama, JP;
Yasuo Fukagawa, Kamakura, JP;
Tomoyuki Ishikura, Chigasaki, JP;
Sanraku Incorporated, , JP;
Abstract
A compound represented by the formula ##STR1## wherein R.sub.1 represents a lower alkyl group or a lower haloalkyl group; R.sub.2 represents a lower alkyl group, a lower haloalkyl group, an aralkyl group, or a group of the formula --COOR.sub.4 or --SO.sub.2 R.sub.5 in which R.sub.4 represents an aralkyl group or a substituted or unsubstituted alkyl group and R.sub.5 represents an alkyl group or a substituted or unsubstituted aryl group; and R.sub.3 represents a hydrogen atom or a carboxyl protecting group which can be easily split off. This compound is useful in the production of a 6-(disubstituted amino)carbapenem-series antibiotic. The compounds of the formula ##STR2## wherein R.sub.1 and R.sub.2 are as defined above are important intermediates for the synthesis of the compounds of formula (I) and/or the aforesaid di-(substituted amino) carbapenem-series antibiotics.