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:
Jul. 14, 2020
Filed:
May. 31, 2018
Applicant:
Daewoong Pharmaceutical Co., Ltd., Gyeonggi-do, KR;
Inventors:
Jeong-Taek Shin, Gyeonggi-do, KR;
Jeong-Hyun Son, Gyeonggi-do, KR;
Deok Ki Eom, Gyeonggi-do, KR;
Chun Ho Lee, Seoul, KR;
Assignee:
Daewoong Pharmaceutical Co., Ltd., Gyeonggi-do, KR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07D 207/36 (2006.01);
U.S. Cl.
CPC ...
C07D 207/36 (2013.01);
Abstract
The present invention relates to a method for preparing intermediates of 4-methoxypyrrole derivatives. The preparation method according to the present invention has advantages that a high-temperature reaction is not required as a whole, inexpensive and non-explosive reagents are used instead of (trimethylsilyl)diazomethane, and further an intermediate of 4-methoxy pyrrole derivatives can be prepared as a whole at a high yield.