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. 18, 2014
Filed:
Mar. 30, 2010
Applicants:
Tadashi Umemoto, Kanagawa, JP;
Yoji Hayase, Kanagawa, JP;
Shumpei Murata, Kanagawa, JP;
Kenichi Miyata, Kanagawa, JP;
Inventors:
Tadashi Umemoto, Kanagawa, JP;
Yoji Hayase, Kanagawa, JP;
Shumpei Murata, Kanagawa, JP;
Kenichi Miyata, Kanagawa, JP;
Assignee:
Takeda Pharmaceutical Company Limited, Osaka, JP;
Primary Examiner:
Int. Cl.
CPC ...
C07H 21/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
There is a demand for a convenient production method of an NC type purine nucleoside. The present invention relates to a method of producing a purine nucleoside represented the formula (I') or a salt thereof, which comprising reacting a pyrimidine nucleoside represented by the formula (I) or a salt thereof with a purine nucleobase represented by the formula B′H in the presence of a Lewis acid.