申请人:Warner-Lambert Company
公开号:US04064123A1
公开(公告)日:1977-12-20
This invention relates to novel indolothiopyrones having the formula: ##STR1## wherein R.sub.1 is hydrogen, lower alkyl or aryl; R.sub.2 is hydrogen or halogen; and R.sub.7 is hydrogen, lower alkyl, lower alkenyl, lower alkynyl, nitro-substituted-aryl, or .omega.-substituted lower alkyl wherein the substituent is: ##STR2## wherein R.sub.4 and R.sub.5 each represent hydrogen, lower alkyl, or together with the nitrogen atom, form a heterocyclic ring; and R.sub.6 is lower alkoxy or amino, and novel intermediates used in their preparation. The indolothiopyrones are prepared by reacting a 3-mercaptoindole with sodium propiolate or a substituted sodium propiolate followed by acidification to obtain an intermediate acid; the intermediate acid cyclizes in the presence of an acid catalyst to obtain the indolothiopyrone structure which may be additionally subjected to halogenation, alkylation or hydrolysis to obtain derivatives having the various substituent groups disclosed. The compounds of this invention are useful in the treatment of angina pectoris and conditions benefiting from the depression of the central nervous system.
本发明涉及一种新型的吲哚硫吡酮,其化学式为:##STR1## 其中R.sub.1为氢,低烷基或芳基;R.sub.2为氢或卤素;R.sub.7为氢、低烷基、低烯基、低炔基、硝基取代的芳基或ω-取代的低烷基,其中取代基为:##STR2## 其中R.sub.4和R.sub.5分别表示氢、低烷基或与氮原子一起形成杂环环;R.sub.6为低烷氧基或氨基,以及用于它们制备的新型中间体。这些吲哚硫吡酮是通过将3-巯基吲哚与丙炔酸钠或取代的丙炔酸钠反应,然后酸化以得到中间酸;在酸催化剂存在下,中间酸环化以得到吲哚硫吡酮结构,该结构可以进一步接受卤素化、烷基化或水解以获得具有所披露的各种取代基的衍生物。本发明的化合物在治疗心绞痛和受益于中枢神经系统抑制的情况下有用。