Transition-metal-free regioselective construction of 1,5-diaryl-1,2,3-triazoles through dehydrative cycloaddition of alcohols with aryl azides mediated by SO2F2
Triazole-Based Monophosphines for Suzuki−Miyaura Coupling and Amination Reactions of Aryl Chlorides
作者:Duan Liu、Wenzhong Gao、Qian Dai、Xumu Zhang
DOI:10.1021/ol051844w
日期:2005.10.1
monophosphine 1 (ClickPhos) has been prepared via efficient 1,3-dipolar cycloadditions of readily available azides and acetylenes. Palladium complexes derived from these ligands provide highlyactivecatalysts for Suzuki-Miyaura coupling and amination reactions of arylchlorides.
Rational Design of 4-Aryl-1,2,3-Triazoles for Indoleamine 2,3-Dioxygenase 1 Inhibition
作者:Ute F. Röhrig、Somi Reddy Majjigapu、Aurélien Grosdidier、Sylvian Bron、Vincent Stroobant、Luc Pilotte、Didier Colau、Pierre Vogel、Benoît J. Van den Eynde、Vincent Zoete、Olivier Michielin
DOI:10.1021/jm300260v
日期:2012.6.14
Indoleamine 2,3-dioxygenase 1 (IDO1) is an important therapeutic target treatment of diseases such as cancer that involve pathological immune escape. Starting from the scaffold of our previously discovered IDO1 inhibitor 4-phenyl-1,2,3-triazole, we used computational structure-based methods to design more potent ligands. This approach yielded highly efficient low molecular weight inhibitors, the most active being of nanomolar potency both in an enzymatic and in a cellular assay, while showing no cellular toxicity and a high selectivity for IDO1 over tryptophan 2,3-dioxygenase (TDO). A quantitative structure-activity relationship based on the electrostatic ligand-protein interactions in the docked binding modes and on the quantum chemically derived charges of the triazole ring demonstrated a good explanatory power for the observed activities.
Triazole-Based Monophosphine Ligands for Palladium-Catalyzed Cross-Coupling Reactions of Aryl Chlorides
作者:Qian Dai、Wenzhong Gao、Duan Liu、Lea M. Kapes、Xumu Zhang
DOI:10.1021/jo060321e
日期:2006.5.1
readily available azides and acetylenes. Their palladium complexes provided excellent yields in the amination reactions and Suzuki−Miyaura coupling reactions of unactivated aryl chlorides. Ligand 7i, which has a 2,6-dimethoxybenzene moiety, provided good results in Suzuki−Miyaura reaction to form hindered biaryls. A CAChe model for the Pd/7i complex shows that the likelihood of a Pd−arene interaction
Transition-metal-free regioselective construction of 1,5-diaryl-1,2,3-triazoles through dehydrative cycloaddition of alcohols with aryl azides mediated by SO<sub>2</sub>F<sub>2</sub>
作者:Xu Zhang、K. P. Rakesh、Hua-Li Qin
DOI:10.1039/c8cc09693g
日期:——
A novel, simple and practical method for mild, efficient, cost-effective and regioselective synthesis of highly valuable 1,5-diaryl-1,2,3-triazoles was developed.