The new indole derivatives of the formula ##STR1## in which R.sup.1 and R.sup.2 are identical or different and denote hydrogen or lower alkyl, R.sup.3 denotes hydrogen, lower alkyl or halogen and R.sup.4 and R.sup.5 are identical or different and denote hydrogen, lower alkyl or optionally substituted aryl, and R.sup.4 and R.sup.5 can also represent lower alkenyl, and wherein R.sup.2 and R.sup.5 can be linked by an alkylene bridge of the formula --CH.sub.2 --CH.sub.2 --CH.sub.2).sub.n in which n represents the number 0 or 1, can be prepared by reacting an ammonium or phosphonium salt of the corresponding indolecarboxylic acid with a haloacetic acid allyl ester. The new compounds can be used to prepare acemetacin. The new indole derivatives possess a pharmacological action.
新的
吲哚衍
生物的
化学式为##STR1##,其中R.sup.1和R.sup.2相同或不同,表示氢或低碳基,R.sup.3表示氢,低碳基或卤素,R.sup.4和R.sup.5相同或不同,表示氢,低碳基或可选取代基苯基,R.sup.4和R.sup.5也可以表示低烯基,其中R.sup.2和R.sup.5可以通过
化学式--CH.sub.2 --CH.sub.2 --CH.sub.2).sub.n的烷基桥连接,其中n表示数字0或1。这些新的化合物可以通过将相应的
吲哚羧酸铵盐或
磷酸铵盐与卤代
乙酸烯丙酯反应制备而成。这些新化合物可用于制备乙酰美托酸。这些新的
吲哚衍
生物具有药理作用。