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. 04, 1977
Filed:
May. 06, 1975
Applicant:
Inventors:
Toshiyuki Hirohashi, Ashiya, JA;
Hiromi Sato, Takarazuka, JA;
Shigeho Inaba, Takarazuka, JA;
Hisao Yamamoto, Nishinomiya, JA;
Assignee:
Sumitomo Chemical Company, Limited, Osaka, JA;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07D / ; A61K / ;
U.S. Cl.
CPC ...
424251 ; 2602 / ; 2602 / ; 2602 / ; 2602 / ; 2602 / ; 2602 / ; 2602 / ; 26029357 ; 2603 / ; 2603305 ; 2603 / ; 2603 / ;
Abstract
1-Substituted-1,2-dihydrothieno[2,3-d]-pyrimidin-2-ones of the formula, ##STR1## wherein R is lower alkyl or cyclopropylmethyl, R.sub.1 is halogen, lower alkyl or nitro, R.sub.2 is hydrogen or lower alkyl and R.sub.3 is hydrogen or halogen, are obtained by treating a trihaloacetamidothiophene derivative with ammonia. These compounds have excellent pharmacological activities such as uricosuric activity.