Novel benzophenone derivatives of the formula ##STR1## wherein X and X.sub.1 are individually selected from the group consisting of hydrogen, halogen, alkyl of 1 to 5 carbon atoms, alkoxy of 1 to 5 carbon atoms, alkylthio of 1 to 5 carbon atoms, CF.sub.3 O--, CF.sub.3 S-- and CF.sub.3 --, R is selected from the group consisting of hydrogen and alkyl of 1 to 5 carbon atoms and R.sub.1 is an aliphatic hydrocarbon of the formula --(CH.sub.2).sub.a --CH = CH--(CH.sub.2).sub.b --H or --(CH.sub.2).sub.a --CH.sub.2 --CH.sub.2 --(CH.sub.2).sub.b --H where a and b are whole numbers between 0 and 16 and whose sum is not greater than 16 which have a very clear analgesic activity.
新型苯甲酮衍
生物的
化学式为##STR1##其中X和X.sub.1分别选自氢、卤素、1至5个碳原子的烷基、1至5个碳原子的烷氧基、1至5个碳原子的烷
硫基、CF.sub.3 O--、CF.sub.3 S--和CF.sub.3 --的组成群,R选自氢和1至5个碳原子的烷基,R.sub.1是具有非常明显镇痛活性的
化学式--(CH.sub.2).sub.a --CH = CH--(CH.sub.2).sub.b --H或--(CH.sub.2).sub.a --CH.sub.2 --CH.sub.2 --(CH.sub.2).sub.b --H的脂肪烃,其中a和b是0到16之间的整数,它们的和不大于16。