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. 25, 1976
Filed:
Nov. 11, 1974
Applicant:
Inventors:
Yoshiyasu Furukawa, Toyonaka, JA;
Osamu Miyashita, Takatsuki, JA;
Assignee:
Takeda Chemical Industries, Ltd., Osaka, JA;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07D / ;
U.S. Cl.
CPC ...
2602 / ; 2602 / ; 424248 ; 424251 ;
Abstract
Novel 3-(disubstituted)aminoisothiazolo[3,4-d]-pyrimidines of the formula ##SPC1## Wherein R.sup.1, R.sup.2 and R.sup.3 are respectively alkyl, alkenyl, aryl, aralkyl or aralkenyl, each of which may be substituted, or R.sup.1 and R.sup.2 form together with the adjacent nitrogen a heterocyclic ring which may be substituted, R.sup.4 is hydrogen or alkyl and X is oxygen or imino with a proviso that when X is imino R.sup.4 is hydrogen, show an eminent adenosine-3',5'-cyclic phosphate phosphodiesterase-inhibitory activity, and exhibit excellent pharmacological actions such as antiinflammatory and sedative activities.