Au-catalyzed synthesis of benzofurans from phenols and alkynes using molecular oxygen
作者:Jinqiang Liao、Pengfeng Guo、Qinlin Chen
DOI:10.1016/j.catcom.2016.01.009
日期:2016.3
An efficient Au-catalyzed transformation for the synthesis of benzofuransfromphenols and alkynes using molecular oxygen has been developed. The reaction proceeds smoothly with commercially available, eco-friendly oxidant and affords the products in moderate to good yields. This reaction is a facile approach for the formation of C − C and C–O bonds.
Facile synthesis of benzofurans via copper-catalyzed aerobic oxidative cyclization of phenols and alkynes
作者:Wei Zeng、Wanqing Wu、Huanfeng Jiang、Liangbin Huang、Yadong Sun、Zhengwang Chen、Xianwei Li
DOI:10.1039/c3cc42326c
日期:——
synthesis of polysubstituted benzofurans using a copper catalyst and molecular oxygen from phenols and alkynes in a one-pot procedure has been reported. The transformation consists of a sequential nucleophilic addition of phenols to alkynes and oxidative cyclization. A wide variety of phenols and alkynes can be used in the same manner.
Direct Access to Benzo[<i>b</i>]furans through Palladium-Catalyzed Oxidative Annulation of Phenols and Unactivated Internal Alkynes
作者:Malleswara Rao Kuram、M. Bhanuchandra、Akhila K. Sahoo
DOI:10.1002/anie.201210217
日期:2013.4.22
2,3‐Disubstituted benzo[b]furans are prepared in one step from commercially available phenols and readily accessible unactivatedinternalalkynes (see scheme). This Pd‐catalyzed oxidativeannulation has a broad substrate scope and allows access to a wide range of benzo[b]furans.
2,3-二取代的苯并[ b ]呋喃一步一步由市售的苯酚和易于获得的未活化内部炔烃制得(参见方案)。这种Pd催化的氧化环化具有广泛的底物范围,并允许使用各种苯并[ b ]呋喃。
Discovery of 4,6-bis(benzyloxy)-3-phenylbenzofuran as a novel Pin1 inhibitor to suppress hepatocellular carcinoma via upregulating microRNA biogenesis
Peptidyl-prolyl cis-trans isomerase NIMA-interacting 1 (Pin1) participates in diverse cancer-associated signaling pathways, playing an oncogenic role in multiple human cancers, including hepatocellular carcinoma (HCC). Our recent works clarify that Pin1 modulates miRNAs biogenesis by interacting with ERK-phosphorylated exportin-5 (XPO5) and changing XPO5 conformation, giving a potential target for HCC treatment. Herein, we discover 4,6-bis(benzyloxy)-3-phenylbenzofuran (TAB29) as a novel Pin1 inhibitor that targets Pin1 PPIase domain. TAB29 potently inhibits Pin1 activity with the IC50 value of 874 nM and displays an excellent selectivity toward Pin1 in vitro. Cell-based biological evaluation reveals that TAB29 significantly suppresses cell proliferation of HCC cells through restoring the nucleus-to-cytoplasm export of XPO5 and upregulating mature miRNAs expression. Collectively, this work provides a promising small molecule lead compound for Pin1 inhibition, highlighting the therapeutic potential of miRNA-based treatment for human cancers.
Arventi, Bulletin de la Societe Chimique de France, 1937, vol. <5> 4, p. 999,1003