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Generated: April 20, 2018

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Claims for Patent: 4,621,077

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Summary for Patent: 4,621,077
Title: Pharmacologically active biphosphonates, process for the preparation thereof and pharmaceutical compositions therefrom
Abstract:Biphosphonic acids of general formula I: ##STR1## in which R is a fluorine atom of a linear or branched alkyl radical containing between 1 and 5 carbon atoms, which may also be substituted by one or more amino groups of fluorine atoms or both amino groups and fluorine atoms, R' is hydroxy or fluorine, and their salts with an alkali metal, an organic base or a basic aminoacid, exhibit valuable properties in the treatment of urolithiasis or in the treatment as inhibitors of bone reabsorption. The compound 4-amino-1-hydroxybutan-1,1-biphosphonic acid is between 100 and 300 times more active than Cl.sub.2 MDP.
Inventor(s): Rosini; Sergio (Pisa, IT), Staibano; Giorgio (Pisa, IT)
Assignee: Istituto Gentili S.p.A. (Pisa, IT)
Application Number:06/618,578
Patent Claims: 1. A method of treatment of urolithiasis and inhibiting bone reabsorption which consists of administering to a patient in need thereof an effective amount of 4-amino-1-hydroxybutane-1,1-biphosphonic acid.

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