申请人:Ciba-Geigy Corporation
公开号:US04939130A1
公开(公告)日:1990-07-03
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.
烷二膦酸,特别是具有以下公式的杂芳基烷二膦酸##STR1##其中R.sub.1是一个5-成员杂芳基基团,可能与苯或环己烯核融合,并包含作为杂原子的2到4个N原子或1个或2个N原子以及1个O或S原子,且未经取代或由较低的烷基,苯基或被较低烷基,较低烷氧基和/或卤素取代的苯基取代,或由较低烷氧基,羟基,二较低烷基氨基,较低烷硫基和/或卤素取代,并/或在能够被较低烷基,较低烷氧基和/或卤素取代的N原子处于N取代状态,R.sub.2是氢,羟基,氨基,较低烷硫基或卤素,以及它们的盐,在钙代谢上具有调节作用,并可用作治疗与钙代谢障碍相关疾病的药物。例如,通过将具有以下公式的化合物转化而得到##STR2##其中X.sub.1是功能修饰磷酸基团,X.sub.2是自由或功能修饰磷酸基团,将X.sub.1和如适当的X.sub.2转化为自由磷酸基团。