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:
Sep. 08, 1992
Filed:
Jan. 25, 1991
Applicant:
Inventors:
Assignee:
Korea Institute of Science and Technology, Seoul, KR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C / ;
U.S. Cl.
CPC ...
562466 ;
Abstract
A process for the preparation d-2-(6-methoxy-2-naphthyl) propionic acid of formula (I) used as nonsteroid antipyretic analgesics, which comprises reacting oxazolidinone of formula (II) with 6-methoxy-2-naphthylacetchloride of formula (IV), methylizing [N-(6-methoxy-2-naphthyl)acetyl]-oxazolidinone of formula (V), and reacting [N-(2S)-2-(6-methoxy-2-naphthyl)-propionyl]-oxazolidinone of formula (VI) in alkali metal hydroxy, and intermediate compound obtained by the process, ]N-(6-methoxy-2-naphthyl)acetyl]-oxazolidionone of formula (V) and [N-(2S))-2-(6-methoxy-2-naphthyl)-propionyl]-oxazolidinone (VI).