New Indole Tubulin Assembly Inhibitors Cause Stable Arrest of Mitotic Progression, Enhanced Stimulation of Natural Killer Cell Cytotoxic Activity, and Repression of Hedgehog-Dependent Cancer
摘要:
We designed 39 new 2-phenylindole derivatives as potential anticancer agents bearing the 3,4,5-trimethoxyphenyl moiety with a sulfur, ketone, or methylene bridging group at position 3 of the indole and with halogen or methoxy substituent(s) at positions 4-7. Compounds 33 and 44 strongly inhibited the growth of the P-glycoprotein-overexpressing multi-drug-resistant cell lines NCI/ADR-RES and Messa/Dx5. At 10 nM, 33 and 44 stimulated the cytotoxic activity of NK cells. At 20-50 nM, 33 and 44 arrested >80% of HeLa cells in the G2/M phase of the cell cycle, with stable arrest of mitotic progression. Cell cycle arrest was followed by cell death. Indoles 33, 44, and 81 showed strong inhibition of the SAG-induced Hedgehog signaling activation in NIH3T3 Shh-Light II cells with IC50 values of 19, 72, and 38 nM, respectively. Compounds of this class potently inhibited tubulin polymerization and cancer cell growth, including stimulation of natural killer cell cytotoxic activity and repression of Hedgehog-dependent cancer.
New Indole Tubulin Assembly Inhibitors Cause Stable Arrest of Mitotic Progression, Enhanced Stimulation of Natural Killer Cell Cytotoxic Activity, and Repression of Hedgehog-Dependent Cancer
摘要:
We designed 39 new 2-phenylindole derivatives as potential anticancer agents bearing the 3,4,5-trimethoxyphenyl moiety with a sulfur, ketone, or methylene bridging group at position 3 of the indole and with halogen or methoxy substituent(s) at positions 4-7. Compounds 33 and 44 strongly inhibited the growth of the P-glycoprotein-overexpressing multi-drug-resistant cell lines NCI/ADR-RES and Messa/Dx5. At 10 nM, 33 and 44 stimulated the cytotoxic activity of NK cells. At 20-50 nM, 33 and 44 arrested >80% of HeLa cells in the G2/M phase of the cell cycle, with stable arrest of mitotic progression. Cell cycle arrest was followed by cell death. Indoles 33, 44, and 81 showed strong inhibition of the SAG-induced Hedgehog signaling activation in NIH3T3 Shh-Light II cells with IC50 values of 19, 72, and 38 nM, respectively. Compounds of this class potently inhibited tubulin polymerization and cancer cell growth, including stimulation of natural killer cell cytotoxic activity and repression of Hedgehog-dependent cancer.
Synthesis of Indoles through Domino Reactions of 2‐Fluorotoluenes and Nitriles
作者:Jianyou Mao、Zhiting Wang、Xinyu Xu、Guoqing Liu、Runsheng Jiang、Haixing Guan、Zhipeng Zheng、Patrick J. Walsh
DOI:10.1002/anie.201904658
日期:2019.8.5
chemistry, and therefore, novel and efficient approaches to their synthesis are in high demand. Among indoles, 2‐aryl indoles have been described as privileged scaffolds. Advanced herein is a straightforward, practical, and transition‐metal‐free assembly of 2‐aryl indoles. Simply combining readily available 2‐fluorotoluenes, nitriles, LiN(SiMe3)2, and CsF enables the generation of a diverse array of indoles
<i>Ortho</i>-selective C–H arylation of phenols with <i>N</i>-carboxyindoles under Brønsted acid- or Cu(<scp>i</scp>)-catalysis
作者:Nguyen H. Nguyen、Soo Min Oh、Cheol-Min Park、Seunghoon Shin
DOI:10.1039/d1sc06157g
日期:——
Control over chemo- and regioselectivity is a critical issue in the heterobiaryl synthesis via C–H oxidativecoupling. To address this challenge, a strategy to invert the normal polarity of indoles in the heterobiaryl coupling was developed. With N-carboxyindoles as umpoled indoles, an exclusively ortho-selective coupling with phenols has been realized, employing a Brønsted acid- or Cu(I)-catalyst (as
控制化学选择性和区域选择性是通过C-H 氧化偶联合成杂二芳基的关键问题。为了应对这一挑战,开发了一种在杂二芳基偶联中反转吲哚正常极性的策略。使用Brønsted 酸或 Cu( I )-催化剂(低至 0.01 mol%) ,使用N-羧基吲哚作为 umpoled 吲哚,实现了与酚类的完全邻位选择性偶联。一系列酚类和N-羧基吲哚在环境温度下具有出色的效率和选择性,并且带有氧化还原活性芳基卤化物(-Br和-I)的底物以正交方式平滑耦合。值得注意的是,已经证明了基于手性二磺酰亚胺或 Cu( I )/手性双膦催化体系的阻转选择性杂二芳基偶联的初步例子。该反应被提议通过 S N 2' 取代或 Cu( I )-Cu( III ) 循环发生,分别使用布朗斯台德酸或 Cu( I ) 催化剂。
Palladium-catalyzed direct arylation of indoles with arylsulfonyl hydrazides
作者:Congrong Liu、Lianghui Ding、Guang Guo、Weiwei Liu、Fu-Lai Yang
DOI:10.1039/c5ob02569a
日期:——
A novel method to synthesise 2-arylindoles is demonstrated via directarylation of indoles with arylsulfonyl hydrazides. Under the optimized reaction conditions, the reaction well tolerates a wide variety of functional groups to afford structurally diverse 2-arylindoles in good to excellent yields at 70 °C.
Brønsted Acid Catalyzed Alkylation of Indoles with Tertiary Propargylic Alcohols: Scope and Limitations
作者:Roberto Sanz、Delia Miguel、Alberto Martínez、Mukut Gohain、Patricia García-García、Manuel A. Fernández-Rodríguez、Estela Álvarez、Félix Rodríguez
DOI:10.1002/ejoc.201001055
日期:2010.12
Junta de Castilla y Leon (BU021A09 and GR-172) and the Ministerio de Educacion y Ciencia (MEC) and FEDER (CTQ2007-61436/BQU and CTQ2009-09949/BQU) for financial support. D. M. and A. M. thank the MEC for MEC-FPU predoctoral fellowships. M. G. thanks the MEC for a "Young Foreign Researchers" contract (SB2006-0215). M. A. F.-R. and P. G.-G. also thank the MEC for "Ramon y Cajal" and "Juan de la Cierva"
Junta de Castilla y Leon (BU021A09 和 GR-172) 以及教育部长 (MEC) 和 FEDER (CTQ2007-61436/BQU 和 CTQ2009-09949/BQU) 提供财政支持。DM 和 AM 感谢 MEC 提供 MEC-FPU 博士前奖学金。MG 感谢 MEC 的“外国青年研究人员”合同 (SB2006-0215)。MAF-R。和PG-G。还要感谢 MEC 的“Ramon y Cajal”和“Juan de la Cierva”合同。
Synthesis of 4-functionalized-1H-indoles from 2,3-dihalophenols
作者:Roberto Sanz、Verónica Guilarte、Nuria García
DOI:10.1039/c004360e
日期:——
A new synthesis of 4-halo-1H-indoles has been developed from easily available 2,3-dihalophenol derivatives. The key steps are Smiles rearrangement and a one-pot or stepwise Sonogashira coupling/NaOH-mediated cyclization. Subsequent functionalization allows access to a wide variety of 2,4- or 2,3,4-regioselectively functionalized indoles.