Multiheterocyclic Motifs via Three-Component Reactions of Benzynes, Cyclic Amines, and Protic Nucleophiles
作者:Sean P. Ross、Thomas R. Hoye
DOI:10.1021/acs.orglett.7b03458
日期:2018.1.5
general, three-component reaction strategy for the construction of compounds containing multiple heterocycles is described. Thermal benzyne formation (by the hexadehydro-Diels–Alder (HDDA) reaction) in the presence of tertiary cyclic amines and a protic nucleophile (HNu) gives, via ring-opening of intermediate ammonium ion/Nu– ion pairs, heterocyclic products. Many reactions are efficient even when
Discovery of <i>N</i>-[4-[6-<i>tert</i>-Butyl-5-methoxy-8-(6-methoxy-2-oxo-1<i>H</i>-pyridin-3-yl)-3-quinolyl]phenyl]methanesulfonamide (RG7109), a Potent Inhibitor of the Hepatitis C Virus NS5B Polymerase
作者:Francisco X. Talamas、Sarah C. Abbot、Shalini Anand、Ken A. Brameld、David S. Carter、Jun Chen、Dana Davis、Javier de Vicente、Amy D. Fung、Leyi Gong、Seth F. Harris、Petra Inbar、Sharada S. Labadie、Eun K. Lee、Remy Lemoine、Sophie Le Pogam、Vincent Leveque、Jim Li、Joel McIntosh、Isabel Nájera、Jaehyeon Park、Aruna Railkar、Sonal Rajyaguru、Michael Sangi、Ryan C. Schoenfeld、Leanna R. Staben、Yunchou Tan、Joshua P. Taygerly、Armando G. Villaseñor、Paul E. Weller
DOI:10.1021/jm401329s
日期:2014.3.13
In the past few years, there have been many advances in the efforts to cure patients with hepatitis C virus (HCV). The ultimate goal of these efforts is to develop a combination therapy consisting of only direct-antiviral agents (DAAs). In this paper, we discuss our efforts that led to the identification of a bicyclic template with potent activity against the NS5B polymerase, a critical enzyme on the life cycle of HCV. In continuation of our exploration to improve the stilbene series, the 3,5,6,8-tetrasubstituted quinoline core was identified as replacement of the stilbene moiety. 6-Methoxy-2(1H)-pyridone was identified among several heterocyclic headgroups to have the best potency. Solubility of the template was improved by replacing a planar aryl linker with a saturated pyrrolidine. Profiling of the most promising compounds led to the identification of quinoline 41 (RG7109), which was selected for advancement to clinical development.