Novel pharmaceutically active bisphosphonic acid derivatives of formula (I), in which R.sup.1, R.sup.2, R.sup.3 and R.sup.4 independently are C.sub.1 -C.sub.22 -alkyl, C.sub.2 -C.sub.22 -alkenyl, C.sub.2 -C.sub.22 -alkynyl, C.sub.3 -C.sub.10 -cycloalkyl, C.sub.3 -C.sub.10 -cycloalkenyl, aryl, aralkyl, silyl and hydrogen, and R.sup.4 is different from hydrogen, Q.sup.1 is hydrogen, fluorine, chlorine, bromine or iodine, and Q.sup.2 is chlorine, bromine or iodine, including the stereoisomers, such as the geometrical isomers and optically active isomers, of the compounds, as well as the pharmaceutically acceptable salts of the compounds. ##STR1##
式(I)中新型药理活性
双膦酸衍
生物,其中 R.sup.1、R.sup.2、R.sup.3 和 R.sup.4 独立地为 C.sub.1 -C.sub.22 -烷基、C.sub.2 -C.sub.22 -烯基、C.sub.2 -C.sub.22 -炔基、C.sub.3 -C.sub.10 -环烷基、C.sub.3 -C.sub.10 -环烯基、芳基、芳基烷基、
硅基和氢,且 R.sup.4 与氢不同,Q.sup.1 为氢、
氟、
氯、
溴或
碘,Q.sup.2 为
氯、
溴或
碘,包括化合物的立体异构体,如几何异构体和光学活性异构体,以及化合物的药学上可接受的盐。