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:
May. 02, 2006
Filed:
Jul. 19, 2004
Applicants:
Young Ho Moon, Suwon-si, KR;
Dong Jun Kim, Incheon, KR;
Chul-hyun Park, Seongnam-si, KR;
Kyung Ik Lee, Anyang-si, KR;
Jae-cheol Lee, Suwon-si, KR;
Gwan Sun Lee, Seoul, KR;
Young-kil Chang, Seoul, KR;
Inventors:
Young Ho Moon, Suwon-si, KR;
Dong Jun Kim, Incheon, KR;
Chul-Hyun Park, Seongnam-si, KR;
Kyung Ik Lee, Anyang-si, KR;
Jae-Cheol Lee, Suwon-si, KR;
Gwan Sun Lee, Seoul, KR;
Young-Kil Chang, Seoul, KR;
Assignee:
Hanmi Pharm. Co., Ltd., Kyungki-do, KR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07D 221/18 (2006.01); C07D 221/02 (2006.01);
U.S. Cl.
CPC ...
Abstract
A method for preparing a 1-androstene derivative which comprises reacting a 2-iodo-androstane derivative with an oxidizing agent while maintaining the pH of the reaction mixture at a specific range gives the 1-androstene derivative with high purity and yield.