decarbonylative C−H coupling of azoles and aromaticesters by palladium catalysis is described. Our previously reported Ni‐catalyzed C−H coupling of azoles and aromaticesters has a significant drawback regarding the substrate scope. Herein, we employ palladium catalysis instead of nickel, resulting in a broader substrate scope in terms of azoles and aromaticesters.
Bisheterocycle Tandem Compounds Useful as Antiviral Agents, the Uses Thereof and the Compositions Comprising Such Compounds
申请人:Nan Fajun
公开号:US20080306121A1
公开(公告)日:2008-12-11
The present invention provides small molecule compounds of bisheterocycle in tandem having the structural formula of P1-P2, and the use thereof as well as a composition containing the compounds, each of P1 and P2 is an unsaturated 5-member heterocyclic ring having one or two heteroatoms. This compound may effectively inhibit the replication of influenza virus, the DNA replication of hepatitis B virus (HBV), and the formation of HBsAg and HBeAg. These compounds can be used for the preparation of a medicament for viral diseases, and may overcome the limitations of the known nucleosides drugs, including cytotoxicity, the requirement of other drugs having different structures for against the drug-resistant virus variants induced by long-term therapy. The structure of the compounds according to the invention is relatively simple and easy to be prepared.
Straightforward microwave-assisted synthesis of 2-thiazolines using Lawesson's reagent under solvent-free conditions
作者:Julio A. Seijas、M. Pilar Vázquez-Tato、José Crecente-Campo
DOI:10.1016/j.tet.2008.07.027
日期:2008.9
2-Thiazolines are synthesized from carboxylic acids and 1,2-aminoalcohols in the presence of Lawesson's reagent under solventless conditions. The developed method is valid for either substituted or unsubstituted aminoalcohols and a wide variety of aromatic, heteroaromatic and aliphatic carboxylic acids; thus it constitutes a general synthetic method for these kinds of compounds. The role of Lawesson's
“Dance reaction” on the aromatic ring is a powerful method in organic chemistry to translocate functional groups on arene scaffolds. Notably, dance reactions of halides and pseudohalides offer a unique platform for the divergent synthesis of substituted (hetero)aromatic compounds when combined with transition-metal-catalyzed coupling reactions. Herein, we report a tandemreaction of ester dance and
2-Thiophen-2-yl-oxazole, 2-Thiophen-2-yl-thiazole and 2-Thiophen-2-yl-1H-imidazole derivatives as antiviral agents
申请人:Shanghai Institute of Materia Medica,
Chinese Academy of Sciences
公开号:EP2223921A1
公开(公告)日:2010-09-01
The present invention provides small molecule compounds of bisheterocycle in tandem having the structural formula of P1-P2, and the use thereof as well as a composition containing the compounds, each of P1 and P2 is an unsaturated 5-member heterocyclic ring having one or two heteroatoms. This compound may effectively inhibit the replication of influenza virus, the DNA replication of hepatitis B virus (HBV), and the formation of HBsAg and HBeAg. These compounds can be used for the preparation of a medicament for viral diseases, and may overcome the limitations of the known nucleosides drugs, including cytotoxicity, the requirement of other drugs having different structures for against the drug-resistant virus variants induced by long-term therapy. The structure of the compounds according to the invention is relatively simple and easy to be prepared.