Synthesis of 2-arylindole derivatives and evaluation as nitric oxide synthase and NFκB inhibitors
作者:Xufen Yu、Eun-Jung Park、Tamara P. Kondratyuk、John M. Pezzuto、Dianqing Sun
DOI:10.1039/c2ob26456k
日期:——
small molecule drug-like inhibitors blocking both nitricoxide synthase and NFκB could offer a synergistic therapeutic approach in the prevention and treatment of inflammation and cancer. During the course of evaluating the biological potential of a commercial compound library, 2-phenylindole (1) displayed inhibitory activity against nitrite production and NFκB with IC50 values of 38.1 ± 1.8 and 25.4
Metal-free dearomative [5+2]/[2+2] cycloaddition of 1<i>H</i>-indoles with <i>ortho</i>-(trimethylsilyl)aryl triflates
作者:Xinyu Chen、Na Yang、Wen Zeng、Lei Wang、Pinhua Li、Hongji Li
DOI:10.1039/d1cc02550c
日期:——
Herein, we report a mild dearomative [5+2]/[2+2] cycloaddition of 1H-indoles with ortho-(trimethylsilyl)aryl triflates. The unique [5+2] cycloaddition enables the synthesis of a series of dibenzo[b,e]azepine derivatives in moderate to good yields. Increasing the steric hindrance at the C2-position of 1H-indoles leads to the [2+2] cycloaddition. Mechanistic investigations support that the reaction of
在此,我们报告了 1 H -吲哚与邻-(三甲基甲硅烷基)芳基三氟甲磺酸酯的温和脱芳基[5+2]/[2+2] 环加成反应。独特的 [5+2] 环加成可以合成一系列二苯并[ b , e ]氮杂衍生物,收率中等至良好。增加 1 H-吲哚的 C2 位的空间位阻导致 [2+2] 环加成。机理研究支持 1 H-吲哚与芳烃的反应经历 [2+2] 环加成步骤,然后扩环为 [5+2] 环加成产物。
One-Pot Synthesis of Furo[3,4-<i>c</i>]indolo[2,1-<i>a</i>]isoquinolines through Rh(III)-Catalyzed Cascade Reactions of 2-Phenylindoles with 4-Hydroxy-2-alkynoates
作者:Yihao Liu、Zi Yang、Remi Chauvin、Wei Fu、Zhenyu Yao、Lianhui Wang、Xiuling Cui
DOI:10.1021/acs.orglett.0c01744
日期:2020.7.2
efficient and regioselective synthesis of fused polycyclic furo[3,4-c]indolo[2,1-a]isoquinolines through Rh(III)-catalyzed cascade C–H activation/annulation/lactonization of 2-arylindoles and 4-hydroxy-2-alkynoates has been developed. This cascade reaction displays high step economy and efficiency and tolerates various functional groups. The titled polycyclic furo[3,4-c]indolo[2,1-a]isoquinolines exhibit
通过Rh(III)催化2-芳基吲哚和4-羟基-吲哚的级联C-H活化/环化/内酯化反应,可以高效,区域选择性地合成稠合的多环呋喃并[3,4- c ]吲哚并[ 2,1- a ]异喹啉。已经开发了2-链烷酸酯。该级联反应显示出高的步骤经济性和效率,并且可以耐受各种官能团。标题为多环呋喃并[3,4- c ]吲哚并[2,1- a ]异喹啉表现出荧光发射。
Brönsted acidic ionic liquid catalyzed synthesis of benzo[a]carbazole from renewable acetol and 2-phenylindoles in a biphasic system
作者:Minghao Li、Fengtian Wu、Yanlong Gu
DOI:10.1016/s1872-2067(19)63370-x
日期:2019.8
Abstract An efficient metal-free strategy for the synthesis of pharmaceutically relevant benzo[a]carbazoles from the derivatives of readily available 2-phenylindole and bio-renewable acetol in an aqueous biphasic system was developed. This protocol employed a sulfone-containing Bronsted acidic ionic liquid as the catalyst, which could be used for five times without a noticeable decrease in its activity
Structure-activity relationships and docking studies of synthetic 2-arylindole derivatives determined with aromatase and quinone reductase 1
作者:Allan M. Prior、Xufen Yu、Eun-Jung Park、Tamara P. Kondratyuk、Yan Lin、John M. Pezzuto、Dianqing Sun
DOI:10.1016/j.bmcl.2017.11.010
日期:2017.12
In our ongoing effort of discovering anticancer and chemopreventive agents, a series of 2-arylindole derivatives were synthesized and evaluated toward aromatase and quinone reductase 1 (QR1). Biological evaluation revealed that several compounds (e.g., 2d, IC50 = 1.61 mu M; 21, IC50 = 3.05 mu M; and 27, IC50 = 3.34 mu M) showed aromatase inhibitory activity with half maximal inhibitory concentration (IC50) values in the low micromolar concentrations. With regard to the QR1 induction activity, 11 exhibited the highest QR1 induction ratio (IR) with a low concentration to double activity (CD) value (IR = 8.34, CD = 2.75 mu M), while 7 showed the most potent CD value of 1.12 mu M. A dual acting compound 24 showed aromatase inhibition (IC50 = 9.00 mu M) as well as QR1 induction (CD = 5.76 mu M) activities. Computational docking studies using CDOCKER (Discovery Studio 3.5) provided insight in regard to the potential binding modes of 2-arylindoles within the aromatase active site. Predominantly, the 2-arylindoles preferred binding with the 2-aryl group toward a small hydrophobic pocket within the active site. The C-5 electron withdrawing group on indole was predicted to have an important role and formed a hydrogen bond with Ser478 (OH). Alternatively, meta-pyridyl analogs may orient with the pyridyl 30-nitrogen coordinating with the heme group. (C) 2017 Elsevier Ltd. All rights reserved.