The present invention provides disphosphonates of the general formula: ##STR1## wherein R.sub.1 is a straight-chain or branched, saturated or unsaturated aliphatic hydrocarbon radical of 1-9 carbon atoms which is optionally substituted by phenyl or cyclohexyl, R.sub.2 is cyclohexyl or cyclohexylmethyl, benzyl or a straight-chained or branched, saturated or unsaturated aliphatic hydrocarbon of 4 to 18 carbon atoms which is optionally substituted by phenyl or oxygen wherein the oxygen can be esterified or etherified, R.sub.3 is hydrogen or a straight-chain or branched alkyl of 1-4 carbon atoms, X is a straight-chain or branched alkylene chain of 1-6 carbon atoms and Y is hydrogen, hydroxyl or an amino group optionally substituted by alkyl radicals of 1-6 carbon atoms; as well as the pharmacologically acceptable salts thereof. The present invention also provides processes for the preparation of these diphosphonic acid derivatives and pharmaceutical compositions containing them for the prophyllaxis treatment of diseases or disturbances of calcium metabolism such as osteoporsis, Pagets disease, Bechterew's disease, bone metastases, urolithiasis, heterotropic ossifications, rheumatoid arthritis, osteoarthritis and degenerative arthrosis.
本发明提供了一般式为:##STR1## 的
二膦酸盐,其中R.sub.1是1-9个碳原子的直链或支链、饱和或不饱和的脂肪烃基,可选择性地被苯或环己基取代,R.sub.2是环己基或环己基甲基、苄基或4-18个碳原子的直链或支链、饱和或不饱和的脂肪烃基,可选择性地被苯或氧取代,其中氧可以酯化或醚化,R.sub.3是氢或1-4个碳原子的直链或支链烷基,X是1-6个碳原子的直链或支链烷基链,Y是氢、羟基或
氨基,可选择性地被1-6个碳原子的烷基基团取代;以及它们的药学上可接受的盐。本发明还提供了制备这些
二膦酸衍
生物的方法和包含它们的药物组合物,用于预防治疗
钙代谢疾病或紊乱,如骨质疏松症、帕吉特病、贝克特瑞氏病、骨转移、泌尿系结石、异位性骨化、类风湿性关节炎、骨关节炎和退行性关节炎。