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:
May. 18, 1976
Filed:
May. 07, 1973
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 / ;
U.S. Cl.
CPC ...
2602 / ; 2602 / ; 2603 / ; 2602 / ; 2603305 ; 2602 / ; 2603 / ; 2603 / ; 424251 ; 2602 / ; 2602 / ; 2602 / ;
Abstract
Novel thienopyrimidine derivatives which have excellent pharmacological uricosuric activity are prepared by reacting a thiophene derivative with cyanic acid or a salt thereof, urea or a reactive ester of carbamic acid. If desired, alkylated, halogenated or nitrated thienopyrimidine derivatives are produced by reacting thienopyrimidine derivatives with an alkylating, halogenating or nitrating agent, respectively.