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:
Jan. 30, 1990
Filed:
Mar. 09, 1989
Applicant:
Inventors:
Assignee:
Mitsui Toatsu Chemicals, Inc., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07D / ;
U.S. Cl.
CPC ...
548342 ;
Abstract
The guanidine derivative represented by the formula [III], ##STR1## (commonly known under the name 'Cimetidine') is produced by reaction of the compound represented by the formula [I], ##STR2## with a compound represented by the formula [II], ##STR3## wherein R.sub.1, R.sub.2, R.sub.3, R.sub.4, R.sub.5 and R.sub.6, is each hydrogen atom, a lower alkyl group, phenyl group, or a radical of --OR.sub.7 or --COOR.sub.7, in which R.sub.7 is hydrogen atom, a lower alkyl group or an alkali metal, followed by reaction with methylamine.