[EN] N-ARYLSULFONYL-3-SUBSTITUTED INDOLES HAVING SEROTONIN RECEPTOR AFFINITY, PROCESS FOR THEIR PREPARATION AND PHARMACEUTICAL COMPOSITION CONTAINING THEM [FR] INDOLES N-ARYLSULFONYL-3-SUBSTITUES PRESENTANT UNE AFFINITE POUR LE RECEPTEUR DE LA SEROTONINE, METHODE DE PREPARATION ET COMPOSITION PHARMACEUTIQUE CONTENANT CES INDOLES