US Patent 7576214 Process for preparing 7-chloro-1-cyclopropyl-6-fluoro-4-oxo-1, 4-dihydro-1,8-naphthyridine-3-carboxylic acid
Patent 7576214 was granted and assigned to LG on August, 2009 by the United States Patent and Trademark Office.
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Patent Inventor Names
Hyun-Ik Shin0
Jay-Hyok Chang0
Kyu-Woong Lee0
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Patent abstract
Starting from ethyl 3-(2,6-dichloro-5-fluoropyridin-3-yl)-3-oxo-propanoate (1), the present invention provides highly pure 7-chloro-1-cyclopropyl-6-fluoro-4-oxo-1,4-dihydro-1,8-naphthyridine-3-carboxylic acid (5) in one-pot four steps using a single solvent.
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US Patent 07576214 Process for preparing 7-chloro-1-cyclopropyl-6-fluoro-4-oxo-1, 4-dihydro-1,8-naphthyridine-3-carboxylic acid US Patent 7576214 Process for preparing 7-chloro-1-cyclopropyl-6-fluoro-4-oxo-1, 4-dihydro-1,8-naphthyridine-3-carboxylic acid
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Patent Number
075762140
Patent Number
75762140
Edits on 26 Sep, 2022
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0
Patent Jurisdiction
Patent Number
075762140
Date of Patent
August 18, 2009
0Patent Application Number
105726360
Date Filed
October 22, 2004
0Official Website
Patent Primary Examiner
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US Patent 07576214 Process for preparing 7-chloro-1-cyclopropyl-6-fluoro-4-oxo-1, 4-dihydro-1,8-naphthyridine-3-carboxylic acid
Infobox
Is a
Current assignee
Patent jurisdiction
Patent number
07576214
Date of patent
August 18, 2009
Patent application number
10572636
Date Filed
October 22, 2004
Patent primary examiner
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