作者:James T. Fletcher、Joseph A. Christensen、Eric M. Villa
DOI:10.1016/j.tetlet.2017.10.023
日期:2017.11
tandem method for preparing 4-formyl-1,2,3-triazoles via a two-step one-pot acetal cleavage/CuAAC reaction was developed. Using this method, 4-formyl-1,2,3-triazole analogs with both electron-withdrawing and electron-donating substituents were prepared in good yield and purity. Expansion of this method to a three-step tandem reaction that incorporates an additional step of azide substitution was also successful
A smalllibrary of simple 1,4-disubstituted 1,2,3-triazoles was prepared using a known one-pot procedure starting from organic halides and terminal alkynes. The compounds were then tested for their antibacterial activity against normal and resistant species of Staphylococcus aureus.
Selective inhibitors of tumor progression loci-2 (Tpl2) kinase with potent inhibition of TNF-α production in human whole blood
作者:Junjun Wu、Neal Green、Rajeev Hotchandani、Yonghan Hu、Jeffrey Condon、Adrian Huang、Neelu Kaila、Huan-Qiu Li、Satenig Guler、Wei Li、Steve Y. Tam、Qin Wang、Jeffrey Pelker、Suzana Marusic、Sang Hsu、J. Perry Hall、Jean-Baptiste Telliez、Junqing Cui、Lih-Ling Lin
DOI:10.1016/j.bmcl.2009.05.009
日期:2009.7
Tpl2 (cot/MAP3K8) is an upstream kinase of MEK in the ERK pathway. It plays an important role in Tumor Necrosis Factor-alpha (TNF-alpha) production and signaling. We have discovered that 8-halo-4-(3-chloro-4-fluorophenylamino)-6-[(1H-[ 1,2,3]triazol-4-ylmethyl)-amino]-quinoline-3-carbonitriles (4) are potent inhibitors of this enzyme. In order to improve the inhibition of TNF-alpha production in LPS-stimulated human blood, a series of analogs with a variety of substitutions around the triazole moiety were studied. We found that a cyclic amine group appended to the triazole ring could considerably enhance potency, aqueous solubility, and cell membrane permeability. Optimization of these cyclic amine groups led to the identification of 8-chloro-4-(3-chloro-4-fluorophenylamino)-6-((1-(1-ethylpiperidin-4-yl)-1H-1,2,3-triazol- 4-yl) methylamino)quinoline-3-carbonitrile (34). In a LPS-stimulated rat inflammation model, compound 34 showed good efficacy in inhibiting TNF-alpha production. (C) 2009 Elsevier Ltd. All rights reserved.