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:
Apr. 22, 2008
Filed:
Feb. 28, 2005
Applicant:
Shinnosuke Tazawa, Chiba, JP;
Inventor:
Shinnosuke Tazawa, Chiba, JP;
Assignees:
Shiratori Pharmaceutical Co., Ltd, Narashino-shi, JP;
Asubio Pharma Co., Ltd., Tokyo, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07D 475/04 (2006.01); C07H 19/19 (2006.01);
U.S. Cl.
CPC ...
Abstract
To provide a method for producing L-biopterin on a large industrial scale by using a reagent which is inexpensive and easy to handle, without requiring a use of any particular equipment or plants. A method for porducing a biopterin derivative represented by the formula (6): wherein Rand R, which are the same or different from each other, each represents a hydrogen atom, an alkyl group, or an aryl group, comprising: wherein Rand Rare the same as defined above,