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. 29, 2009
Filed:
Jun. 23, 2005
Applicants:
Jaeheon Lee, Yongin-si, KR;
Gha-seung Park, Yongin-si, KR;
Moonsub Lee, Daejeon, KR;
Cheol-kyong Kim, Suwon-si, KR;
Jae-chul Lee, Suwon-si, KR;
Young-kil Chang, Seoul, KR;
Gwan-sun Lee, Seoul, KR;
Inventors:
Jaeheon Lee, Yongin-si, KR;
Gha-Seung Park, Yongin-si, KR;
Moonsub Lee, Daejeon, KR;
Cheol-Kyong Kim, Suwon-si, KR;
Jae-Chul Lee, Suwon-si, KR;
Young-Kil Chang, Seoul, KR;
Gwan-Sun Lee, Seoul, KR;
Assignee:
Hanmi Pharm, Co., Ltd, Hwaseong-gun, KR;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07D 307/02 (2006.01);
U.S. Cl.
CPC ...
Abstract
3R-carboxylate enantiomer derivative of formula (III) can be prepared easily and selectively by the method of the present invention, and a highly pure D-erythro-2,2-difluoro-2-deoxy-1-oxoribose derivative can be prepared efficiently from the compound of formula (III) as an intermediate.