申请人:Ciba-Geigy Corporation
公开号:US04883877A1
公开(公告)日:1989-11-28
Compounds of the formula I ##STR1## in which R.sup.1, R.sup.2, R.sup.3 and R.sup.4 are, for example, H, alkyl, cycloalkyl, aryl or alkaryl are suitable as an ammonium salt-forming component for acid pharmaceutical active ingredients, and in particular for the preparation of azabicyclo[3.1.1.]heptane-substituted alkanediphosphonic acids for the treatment of diseases which can be attributed to disturbances in calcium metabolism.
公式I化合物(##STR1##),其中R.sup.1, R.sup.2, R.sup.3和R.sup.4例如为H、烷基、环烷基、芳基或烷基芳基,适合用作酸性药物活性成分的铵盐形成组分,尤其是用于制备治疗可归因于钙代谢紊乱疾病的azabicyclo[3.1.1]庚烷基取代的烷二膦酸。