The palladium- and copper-catalyzed C-H arylation reactions of 1H- and 2H-indazoles with haloarenes are described. A PdCl2/phen/Ag2CO3/K3PO4 catalytic system is effective for the C-H arylation of 1H- and 2H-indazoles with haloarenes, whereas a less expensive CuI/phen/LiOt-Bu catalytic system is applicable to the C H coupling of substituted 2H-indazoles and iodoarenes. The utility of newly developed catalyst was demonstrated in the rapid synthesis of YC-1 (an antitumor agent) and YD-3 (platelet anti-aggregating agent). These new reactions represent important direct functionalization tools of indazoles, well-known bioisosteres of pharmaceutically important indole core. (C) 2012 Elsevier Ltd. All rights reserved.
Ligand-Promoted <i>Meta</i>-C–H Arylation of Anilines, Phenols, and Heterocycles
作者:Peng Wang、Marcus E. Farmer、Xing Huo、Pankaj Jain、Peng-Xiang Shen、Mette Ishoey、James E. Bradner、Steven R. Wisniewski、Martin D. Eastgate、Jin-Quan Yu
DOI:10.1021/jacs.6b04966
日期:2016.7.27
Here we report the development of a versatile 3-acetylamino-2-hydroxypyridine class of ligands that promote meta-C-H arylation of anilines, heterocyclic aromatic amines, phenols, and 2-benzyl heterocycles using norbornene as a transient mediator. More than 120 examples are presented, demonstrating this ligand scaffold enables a wide substrate and coupling partner scope. Meta-C-H arylation with heterocyclic
Macrocyclic peptides are disclosed having the general formula:
wherein R
3
, R
3
′, R
4
, R
6
, R′, X, Q and W are described. Compositions comprising the compounds and methods for using the compounds to inhibit HCV are also disclosed.
Macrocyclic peptides are disclosed having the general formula:
wherein R′, R
3
, R
3′
, R
4
, R
6
, X, Q, and W are described. Compositions comprising the compounds and methods for using the compounds to inhibit HCV are also disclosed.
[EN] PYRAZOLE DERIVATIVES AS SGC STIMULATORS<br/>[FR] DÉRIVÉS DE PYRAZOLE UTILISÉS COMME STIMULATEURS DE SGC
申请人:IRONWOOD PHARMACEUTICALS INC
公开号:WO2016044447A1
公开(公告)日:2016-03-24
There are described imidazole and pyrazole derivatives which are useful as stimulators of sGC, particularly NO-independent, heme-dependent stimulators. These compounds are also useful for treating, preventing or managing various disorders that are herein disclosed.
[EN] SGC STIMULATORS<br/>[FR] STIMULATEURS DE LA SGC
申请人:IRONWOOD PHARMACEUTICALS INC
公开号:WO2015089182A1
公开(公告)日:2015-06-18
The present patent application discloses at least the compounds according to Formula 1 shown below, or pharmaceutically acceptable salts thereof, wherein ringjB,n, JD, J,0, X, X1, J, RC, and W are as defined herein. These compounds are useful as simulators of soluble sGC.