Regioselective Friedel–Crafts Reactions of N-Substituted Glyoxylamide with Indoles Catalyzed by Brønsted Acid
作者:Yong Wu、Zhen Zhan、Renjun Li、Yang Zheng、Yan Zhou、Li Hai
DOI:10.1055/s-0035-1560462
日期:——
An efficient regioselective Friedel–Craftsreaction of a series of N-substituted glyoxylamide with indoles catalyzed by Bronsted acid was developed. The reactions proceeded smoothly at room temperature and the corresponding N-substituted 2-hydroxy-2-(1H-indol-3-yl) acetamides were afforded in moderate to good yields (up to 89%). When 2 M HCl was used, the bisindole compounds were obtained in good to
hydroxyalkylation of N -substituted glyoxylamide with various indoles catalyzed by Lewis acids was developed. The reactions proceeded smoothly at room temperature and the 2-hydroxy-2-(1 H -indol-3-yl)- N -substituted acetamide resulted from the reactions catalyzed by FeSO 4 were synthesized in excellent yields (up to 93%). While the bisindole compounds were obtained when FeCl 3 was used as a catalyst
[EN] INHIBITION OF SHP2/PTPN11 PROTEIN TYROSINE PHOSPHATASE BY NSC-87877, NSC-117199 AND THEIR ANALOGS<br/>[FR] INHIBITION DE LA PROTEINE TYROSINE PHOSPHATASE SHP2/PTPN11 PAR NSC-87877, NSC-117199 ET LEURS ANALOGUES
申请人:UNIV SOUTH FLORIDA
公开号:WO2007117699A2
公开(公告)日:2007-10-18
[EN] Compounds and associated methods for inhibiting a protein tyrosine phosphatase. By a combination of experimental and virtual screenings of the NCI Diversity Set chemical library, NSC-87877 and NSC-117199 have been identified as Shp2 PTP inhibitors. Significantly, NSC-87877 is active in cell-based assays and has no detectable off-target effects in the EGF-stimulated Erkl/2 activation pathway. Additionally, a number of analogs of NSC-1 17199 have been produced. These analogs exhibit enhanced protein tyrosine phosphatase inhibition and arc found to be potent and/or selectiv e inhibitors of Shp l and/or Shp2 protein tyrosine phosphatases. [FR] La présente invention concerne des composés et des procédés associés permettant d'inhiber une protéine tyrosine phosphatase. Grâce à une association de criblages expérimentaux et virtuels de la banque chimique Diversity Set du NCI, on a pu identifier le NSC-87877 et le NSC-117199 comme inhibiteurs du Shp2 PTP. De manière significative, le NSC-87877 est actif dans des analyses cellulaires et ne présente aucun effet non ciblé détectable dans la voie d'activation Erkl/2 stimulée par EGF. En outre, un certain nombre d'analogues du NSC-1 17199 ont été produits. Ces analogues présentent une inhibition accrue de la protéine tyrosine phosphatase et sont des inhibiteurs puissants et/ou sélectifs des protéines tyrosines phosphatases Shpl et/ou Shp2.