Novel 3-aryl-3-cycloalkyl-piperidine-2,6-dione derivatives of the general formula I: ##STR1## in which A is a 4-aminophenyl radical or a pyridyl-(4)-radical and R.sub.1 is a saturated or unsaturated C.sub.3 -C.sub.10 -cycloalkyl radical or a C.sub.3 -C.sub.12 -alkenyl radical as well as physiologically acceptable salts thereof. The compounds are useful as inhibitors of estrogen biosynthesis. The compounds are made by a process which includes the step of heating a compound of the formula II ##STR2## wherein A and R.sub.1 have the meanings given above, and in addition A may also be a phenyl radical or a 4-nitrophenyl radical, X and Y are the same or different and repesent CN or COOC.sub.1 -C.sub.6 -alkyl and X or Y may also be COOH or a carboxylic acid ester group of the formula COOC.sub.1 -C.sub.6 -alkyl group, in a high boiling solvent at a temperature between 50.degree. and 200.degree. C. in particular between 80.degree. and 100.degree. C., optionally in the presence of condensation agents to form a piperidine dione ring.
通式I的新型3-芳基-3-环烷基
哌啶-2,6-二酮衍
生物:##STR1## 其中A为4-
氨基苯基基团或
吡啶基-(4)-基团,R.sub.1为饱和或不饱和的C.sub.3-C.sub.10-环烷基基团或C.sub.3-C.sub.12-烯基基团,以及其生理上可接受的盐。该化合物可用作
雌激素生物合成的
抑制剂。该化合物的制备方法包括在高沸点溶剂中加热通式II的化合物:##STR2## 其中A和R.sub.1具有上述给定的含义,此外A还可以是苯基基团或4-
硝基苯基基团,X和Y相同或不同,表示CN或COOC.sub.1-C.sub.6-烷基,X或Y还可以是COOH或公式COOC.sub.1-C.sub.6-烷基基团的
羧酸酯基团,在50℃至200℃之间(特别是在80℃至100℃之间)的温度下,可选地在
缩合剂的存在下形成
哌啶二酮环。