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Patent: 4,939,130

Summary for Patent: 4,939,130

Title: Substituted alkanediphosphonic acids and pharmaceutical use
Abstract:Alkanediphosphonic acids, in particular heteroarylalkanediphosphonic acids of formula ##STR1## wherein R.sub.1 is a 5-membered heteroaryl radical which may be fused with benzene or cyclohexene nuclei and which contains, as hetero atoms, 2 to 4 N-atoms or 1 or 2 N-atoms as well as 1 O- or S-atom, and which is unsubstituted or C-substituted by lower alkyl, phenyl or phenyl which is substituted by lower alkyl, lower alkoxy and/or halogen, or by lower alkoxy, hydroxy, di-lower alkylamino, lower alkylthio and/or halogen, and/or is N-substituted at a N-atom which is capable of substitution by lower alkyl, lower alkoxy and/or halogen, and R.sub.2 is hydrogen, hydroxy, amino, lower alkylthio or halogen, and salts thereof, have regulatory action on calcium metabolism and can be used as medicaments for the treatment of diseases associated with impairment of calcium metabolism. The compounds are obtained for example by converting, in a compound of formula ##STR2## wherein X.sub.1 is a functionally modified phosphono group and X.sub.2 is a free or functionally modified phosphono group, X.sub.1 and, if appropriate X.sub.2, into the free phosphono group.
Inventor(s): Jaeggi; Knut A. (Basel, CH), Widler; Leo (Muchenstein, CH)
Assignee: Ciba-Geigy Corporation (Ardsley, NY)
Application Number:07/315,962
Patent Claim Types:
see list of patent claims
Compound; Use; Composition; Compound; Composition; Use;
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Foreign Priority and PCT Information for Patent: 4,939,130

Foriegn Application Priority Data
Foreign Country Foreign Patent Number Foreign Patent Date
Switzerland4666/86Nov 21, 1986

International Patent Family for Patent: 4,939,130

Country Document Number Publication Date
South Africa8708698May 23, 1988
Singapore92194Apr 28, 1995
Portugal86167Dec 01, 1987
Philippines24345Jun 13, 1990
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