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:
Feb. 21, 1995
Filed:
Aug. 31, 1992
Applicant:
Inventors:
Masami Igi, Osaka, JP;
Taketo Hayashi, Yao, JP;
Assignee:
Sumika Fine Chemicals Co., Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07D / ;
U.S. Cl.
CPC ...
544118 ; 544 61 ; 544277 ;
Abstract
The present invention is directed to a method for production of a 2-amino-6-halogenopurine, a novel synthesis intermediate therefor and a method for production of said synthesis intermediate. The desired 2-amino-6-halogenopurine is an intermediate for the production of compounds useful as an antiviral agent, and by using the compound of the present invention as a starting material, the 2-amino-6-halogenopurine can be produced in high yield.