Selective, centrally acting serotonin 5-HT2 antagonists. 1. 2- and 6-Substituted 1-phenyl-3-(4-piperidinyl)-1H-indoles
作者:Jens Perregaard、Kim Andersen、John Hyttel、Connie Sanchez
DOI:10.1021/jm00104a006
日期:1992.12
1-[2-[4-(1H-indol-3-yl)-1-piperidinyl]ethyl]-2-imidazolidinones has been synthesized. The 1-position of the indole is substituted with phenyl groups and in the 2- or 6-positions are additional substituents. An analogous series with the imidazolidinone ring opened to corresponding urea derivatives was also prepared. High potency and selectivity for 5-HT2 receptors (as compared with D2 and alpha 1 receptor affinities)
合成了一系列的1- [2- [4-(1H-吲哚-3-基)-1-哌啶基]乙基] -2-咪唑啉酮。吲哚的1-位被苯基取代,在2-或6-位是另外的取代基。还制备了类似的系列,其中咪唑烷酮环开向相应的脲衍生物。用中等大的取代基(如6-氯,6-甲基和6-三氟甲基或2-甲基取代基)获得了对5-HT2受体的高效力和选择性(与D2和α1受体亲和力相比)。较大的6-取代基(例如异丙基)会大大降低活性,而较小的6-氟取代基则会提供非选择性化合物。通过将6-取代基与未取代的1-苯基和取代的1-苯基(2-F,4-F,4-Cl)结合,发现了选择性5-HT2拮抗剂。然而,苯基的3-取代显着降低了5-HT2受体的亲和力,尤其是在3-三氟甲基取代基的情况下。在咪唑烷酮环中引入3-(2-丙基)取代基降低了与α1肾上腺素能受体的结合,为3-8倍。与3-未取代的衍生物相比,该取代基的存在实际上未发现对5-HT2和D2受体亲和力