Annulation of Aromatic Imines via Directed C−H Bond Activation
作者:Reema K. Thalji、Kateri A. Ahrendt、Robert G. Bergman、Jonathan A. Ellman
DOI:10.1021/jo050757e
日期:2005.8.1
dihydroindoles, and other polycyclic aromatic compounds is presented. Cyclization of aromatic ketimines and aldimines containing alkenyl groups tethered at the meta position relative to the imine directing group has been achieved using (PPh3)3RhCl (Wilkinson's catalyst). The cyclization of a range of aromatic ketimines and aldimines provides bi- and tricyclic ring systems with good regioselectivity. Different ring
Palladium-catalyzed N1-selective allylation of indoles with allylic alcohols promoted by titanium tetraisopropoxide
作者:Chieh-Yu Chang、Yu-Huan Lin、Yen-Ku Wu
DOI:10.1039/c8cc09817d
日期:——
This chemistry provides a facile route to a variety of allylated indoles in synthetically useful yields. The utility of this simple allylation reaction was demonstrated with the first total synthesis of (+)-N-(4′-hydroxyprenyl)-cyclo(alanyltryptophyl), which was completed in five steps, starting from L-tryptophan methylester hydrochloride.
The Selective Nickel‐Catalyzed
<i>N</i>
‐Allylation of C3‐Unprotected Indoles under Mild and Clean Conditions
作者:Bouchaib Mouhsine、Abdallah Karim、Clément Dumont、Anthony Saint Pol、Isabelle Suisse、Mathieu Sauthier
DOI:10.1002/ejoc.202200042
日期:2022.7.14
AbstractA simple salt free and selective N‐allylation of indoles with allylic alcohols has been developed. The protocol uses a catalytic amount of a nickel complex generated in situ from Ni(cod)2 and dppf as diphosphine. The use of DMSO as the reaction solvent is crucial to control the regioselectivity of the reaction with the exclusive formation of the N‐allyl product among up to three possible products.
4-Indolylbutanals from rhodium-catalyzed hydroformylation of allylindoles as precursors of benzofused indolizines
作者:Giuditta Guazzelli、Roberta Settambolo
DOI:10.1016/j.tetlet.2007.06.076
日期:2007.8
New 4-indolylbutanals have been prepared via a rhodium-catalyzed hydroformylation of differently substituted N-allylindoles. The aldehydes bearing an electron-donating group on the indole nucleus 3-position can evolve into benzofused indolizines via a one pot intramolecular cyclodehydration. (C) 2007 Elsevier Ltd. All rights reserved.
New Nucleotide-Competitive Non-Nucleoside Inhibitors of Terminal Deoxynucleotidyl Transferase: Discovery, Characterization, and Crystal Structure in Complex with the Target
Terminal deoxynucletidyl transferase (TdT) is overexpressed in some cancer types, where it might compete with pol μ during the mutagenic repair of double strand breaks (DSBs) through the nonhomologous end joining (NHEJ) pathway. Here we report the discovery and characterization of pyrrolyl and indolyl diketo acids that specifically target TdT and behave as nucleotide-competitive inhibitors. These compounds