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:
Dec. 09, 2003
Filed:
Dec. 06, 2002
Applicant:
Inventors:
Tai-Au Lee, Seoul, KR;
Nam-Jin Park, Suwon, KR;
Ja-Heouk Khoo, Kunpo, KR;
Byung-Cheol Lee, Bucheon, KR;
Assignee:
Yuhan Corporation, Seoul, KR;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07H 1/9056 ; C07H 5/04 ;
U.S. Cl.
CPC ...
C07H 1/9056 ; C07H 5/04 ;
Abstract
Provided are a process for preparing &bgr;-D-ribofuranose derivatives, which are useful as an intermediate for the preparation of ribavirin. The process can be performed under a mild condition, in the presence of a catalyst selected from the group consisting of methanesulfonic acid, benzenesulfonic acid and p-toluenesulfonic acid.