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:
Aug. 22, 2006
Filed:
Dec. 23, 2002
Hun Yeong Koh, Gyeonggi-Do, KR;
Kyung IL Choi, Seoul, KR;
Yong Seo Cho, Seoul, KR;
AE Nim Pae, Seoul, KR;
Joo Hwan Cha, Seoul, KR;
YE Sun Han, Seoul, KR;
Jong Soo Lee, Gyeonggi-Do, KR;
Hong Chul Yun, Seoul, KR;
Hun Yeong Koh, Gyeonggi-Do, KR;
Kyung Il Choi, Seoul, KR;
Yong Seo Cho, Seoul, KR;
Ae Nim Pae, Seoul, KR;
Joo Hwan Cha, Seoul, KR;
Ye Sun Han, Seoul, KR;
Jong Soo Lee, Gyeonggi-Do, KR;
Hong Chul Yun, Seoul, KR;
Korea Institute of Science and Technology, Seoul, KR;
Abstract
A compound represented by a general formula (Ia) or (Ib) and a stereo-selective preparation method thereof using a carbonyl reductase which is separated from. The compound can be prepared by reduction of substituted β-keto ester and can be used as an intermediate in preparing β-lactam group antibiotics.