申请人:Sanofi
公开号:US04876247A1
公开(公告)日:1989-10-24
The invention relates to methylenediphosphonic acid derivatives of the formula: ##STR1## in which: R.sub.1 represents: a C.sub.1 -C.sub.6 alkyl group, a C.sub.5 -C.sub.7 cycloalkyl group, a phenyl group optionally monosubstituted or polysubstituted by a halogen, a C.sub.1 -C.sub.6 alkyl group or a trifluoromethyl group, or a 5-membered or 6-membered heterocycle containing 1 or 2 heteroatoms chosen from nitrogen and sulfur, Alk denotes a linear or branched C.sub.1 -C.sub.6 alkylene group, R.sub.2 represents hydrogen, a C.sub.1 -C.sub.6 alkyl group or a --CONH.sub.2 group, R.sub.3 represents hydrogen, a C.sub.1 -C.sub.6 alkyl group, a benzyl group or a phenyl group optionally substituted by chlorine or methyl groups; or alternatively R.sub.2 and R.sub.3, taken together, represent a (CH.sub.2).sub.m group, in which m=4 or 5, and finally n represents 0 or the integer 1 or 2. These derivatives possess antirheumatic properties.
该发明涉及公式为:##STR1##的亚甲基二磷酸衍生物,其中:R.sub.1代表:C.sub.1-C.sub.6烷基,C.sub.5-C.sub.7环烷基,苯基,可选择单取代或多取代的卤素,C.sub.1-C.sub.6烷基或三氟甲基,或含有1个或2个氮和硫的5元或6元杂环,Alk表示线性或支链C.sub.1-C.sub.6烷基,R.sub.2代表氢,C.sub.1-C.sub.6烷基或--CONH.sub.2基团,R.sub.3代表氢,C.sub.1-C.sub.6烷基,苄基或苯基,可选择氯或甲基取代;或者R.sub.2和R.sub.3一起表示(CH.sub.2).sub.m基团,其中m=4或5,最后n表示0或整数1或2。这些衍生物具有抗风湿性能。