申请人:Sandoz Ltd.
公开号:US04228105A1
公开(公告)日:1980-10-14
A process for the production of compounds of formula I, ##STR1## wherein R.sub.1 is alkyl of 1 to 3 carbon atoms, R.sub.2 is hydrogen, fluorine, chlorine or bromine, and R.sub.3 is bromine, iodine, isobutyl, tert. butyl, cyclohexyl, cyclohexenyl; or phenyl, optionally substituted by fluorine, chlorine, bromine or alkoxy of 1 to 4 carbon atoms; or a radical of formula II, ##STR2## in which either R.sub.4 and R.sub.5 are the same or different and each signifies alkyl of 1 to 3 carbon atoms, or R.sub.4 and R.sub.5 together signify the radical --(CH.sub.2).sub.n --, in which n is 4 or 5, the radical --CH.sub.2 --CH.sub.2 --0--CH.sub.2 --CH.sub.2 --, the radical --CH.sub.2 --CH.dbd.CH--CH.sub.2 --, or the radical --CH.sub.2 --CH.sub.2 --N(R.sub.6)--CH.sub.2 --CH.sub.2 --, in which R.sub.6 is hydrogen or alkyl of 1 to 3 carbon atoms. Hydroxyketone and hydroxy imine intermediates are also disclosed. The compounds of formula I are known to exhibit anti-inflammatory activity.
一种制备式I的化合物的方法,其中R.sub.1是1至3个碳原子的烷基,R.sub.2是氢、氟、氯或溴,R.sub.3是溴、碘、异丁基、tert.丁基、环己基、环己烯基;或苯基,可选择用1至4个碳原子的氟、氯、溴或烷氧基取代;或式II的基团,其中R.sub.4和R.sub.5是相同或不同的烷基,每个烷基都表示1至3个碳原子,或R.sub.4和R.sub.5一起表示基团--(CH.sub.2).sub.n--,其中n为4或5,基团--CH.sub.2--CH.sub.2--0--CH.sub.2--CH.sub.2--,基团--CH.sub.2--CH.dbd.CH--CH.sub.2--,或基团--CH.sub.2--CH.sub.2--N(R.sub.6)--CH.sub.2--CH.sub.2--,其中R.sub.6是氢或1至3个碳原子的烷基。还公开了羟基酮和羟基亚胺中间体。已知式I的化合物具有抗炎活性。