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:
Oct. 29, 2013
Filed:
Dec. 24, 2009
Jaeheon Lee, Yongin-si, KR;
Gha-seung Park, Yongin-si, KR;
Jin Hee Kim, Hwaseong-si, KR;
Ji Eun Lee, Seoul, KR;
Chul Hyun Park, Seongnam-si, KR;
Tae Jin Choi, Seongnam-si, KR;
Eun-ju Park, Hwaseong-si, KR;
Cheol Kyung Kim, Suwon-si, KR;
Eun Jung Lim, Daegu, KR;
Young-kil Chang, Seoul, KR;
Gwan Sun Lee, Seoul, KR;
Jaeheon Lee, Yongin-si, KR;
Gha-Seung Park, Yongin-si, KR;
Jin Hee Kim, Hwaseong-si, KR;
Ji Eun Lee, Seoul, KR;
Chul Hyun Park, Seongnam-si, KR;
Tae Jin Choi, Seongnam-si, KR;
Eun-Ju Park, Hwaseong-si, KR;
Cheol Kyung Kim, Suwon-si, KR;
Eun Jung Lim, Daegu, KR;
Young-Kil Chang, Seoul, KR;
Gwan Sun Lee, Seoul, KR;
Hanmi Science Co., Ltd, Hwaseong-si, KR;
Abstract
The present invention relates to a novel, high-yield and low-cost method for preparing entecavir, [1-S-(1α,3α,4β)]-2-amino-1,9-dihydro-9-[4-hydroxy-3-(hydroxymethyl)-2-methylenecyclopentyl]-6H-purin-6-one, an antiviral agent, and novel intermediates used therein.