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:
Jul. 31, 1990
Filed:
Sep. 21, 1988
Applicant:
Inventors:
Toshimitsu Suzuki, Yokohama, JP;
Masakazu Sakaguchi, Yokohama, JP;
Yoshiyuki Miyata, Yokohama, JP;
Tomoyuki Mori, Yokohama, JP;
Assignee:
Pola Chemical Industries Inc., Japan, Shizuoka, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07D / ; A61K / ;
U.S. Cl.
CPC ...
514398 ; 548338 ;
Abstract
A novel heterocyclic derivative of formula (I): ##STR1## wherein R.sub.1 represents ##STR2## and R.sub.2 represents hydrogen or acyl. When R.sub.2 is acyl, the derivative can be prepared, for example, by the following process: ##STR3## wherein R.sub.4 is acyl and R.sub.1 is ##STR4## The derivative is less toxic and has radiosensitizing activity and antiviral activity even at a low concentration. Radiosensitizing agents and antiviral agents containing the derivative as active component are also disclosed.