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:
Dec. 03, 2013
Filed:
Jun. 29, 2010
Toshikazu Yagi, Osaka, JP;
Koji Koyama, Osaka, JP;
Masanori Itoh, Osaka, JP;
Dainippon Sumitomo Pharma Co., Ltd., Osaka, JP;
Abstract
The present invention provides a process for producing Droxidopa or a pharmaceutically acceptable salt thereof comprising a step of reacting threo-N-phthaloyl-3-(3,4-dihydroxyphenyl)-L-serine represented by the formula (1) with methylamine, whereby a process for producing threo-3-(3,4-dihydroxyphenyl)-L-serine (common name: Droxidopa), which is useful as an agent for treatment of peripheral orthostatic hypotension or an agent for treatment of Parkinson's disease, with high production efficiency and without requiring troublesome operations.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile