Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Parven Kumar Luthra0
Pandurang Balwant Deshpande0
Date of Patent
October 21, 2008
0Patent Application Number
114916960
Date Filed
July 24, 2006
0Patent Primary Examiner
Patent abstract
The present invention provides a novel process for preparation of bisphosphonic acid derivatives or pharmaceutical acceptable salt thereof, by reacting carboxylic acid having structural formula (II) with phosphorous acid and a halophosphorous compound, wherein halophosphorous compound is selected from the group comprising of PCl3, PCl5, POCl3, PBr3, POBr3, and PBr5 in presence of diphenyl ether.
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