Substituted aminomethylenebis(phosphonic acid) derivatives represented by the general formula: ##STR1## in which R.sup.1, R.sup.2 R.sup.3 and R.sup.4 may be the same or different, each represents a hydrogen atom or a lower alkyl group; "m" is zero or represents an integer from 1 to 4; and a ring "A" represents a cycloalkenyl group having 5 to 8 carbon atoms, a bicycloheptyl group, a bicycloheptenyl group or a saturated heterocyclic group having 4 to 7 carbon atoms and containing an oxygen atom, a sulfur atom, a sulfinyl group (--SO--) or a sulfonyl group (--SO.sub.2 --), or pharmaceutically acceptable salts thereof.
通式表示的取代
氨基甲基双(
膦酸)衍
生物:##STR1## 其中R.sup.1、R.sup.2、R.sup.3和R.sup.4可以相同也可以不同,每个代表氢原子或较低的烷基基团;"m"为零或表示1至4的整数;环"A"表示具有5至8个碳原子的环烯基基团、双环庚基基团、双
环庚烯基团或具有4至7个碳原子且含有一个氧原子、
硫原子、亚磺基(--SO--)或磺基(--SO.sub.2 --)的饱和杂环基团,或其药学上可接受的盐。