Synthesis and SAR of novel imidazoquinoxaline-Based Lck inhibitors: improvement of cell potency
摘要:
A series of anilino(imidazoquinoxaline) analogues bearing solubilizing side chains at the 6- and 7-positions of the fused phenyl ring has been prepared and evaluated for inhibition against Lck enzyme and of T-cell proliferation. Significant improvement of the cellular activity was achieved over the initial lead, compound 2. (C) 2002 Elsevier Science Ltd. All rights reserved.
[EN] CARBAMATE AND UREA INHIBITORS OF 11BETA-HYDROXYSTEROID DEHYDROGENASE 1 [FR] INHIBITEURS DE LA 11-BÊTA-HYDROXYSTÉROÏDE DÉSHYDROGÉNASE 1 À BASE DE CARBAMATE ET D'URÉE
Electrochemically C–H/S–H Oxidative Cross-Coupling between Quinoxalin-2(1<i>H</i>)-ones and Thiols for the Synthesis of 3-Thioquinoxalinones
作者:Jiadi Zhou、Zhonghui Li、Zexu Sun、Quanlei Ren、Qiwei Zhang、Hu Li、Jianjun Li
DOI:10.1021/acs.joc.0c00050
日期:2020.3.20
An electrochemical method for the C(sp2)-H thioetherification of quinoxalin-2(1H)-ones with primary, secondary, and tertiary thiols has been reported. Various quinoxalin-2(1H)-ones underwent this thioetherification smoothly under metal- and chemical oxidant-free conditions, affording 3-alkylthiol-substituted quinoxalin-2(1H)-ones in moderate to good yields.
Herein the first example of electrochemically enabled, NiCl2-catalyzed reductive decarboxylative coupling of N-hydroxyphthalimide (NHP) esters with quinoxalinones is reported. A range of primary, secondary, tertiary aliphatic carboxylic acids and amino acid-derived esters were tolerated well. This decarboxylative coupling allows access to structurally diverse 3-alkylated quinoxalinones in up to 91%
Electrochemical decarboxylative C3 alkylation of quinoxalin-2(1<i>H</i>)-ones with <i>N</i>-hydroxyphthalimide esters
作者:Kaikai Niu、Lingyun Song、Yanke Hao、Yuxiu Liu、Qingmin Wang
DOI:10.1039/d0cc05391k
日期:——
We have developed a protocol for electrochemical decarboxylative C3 alkylation of a wide range of quinoxalin-2(1H)-ones under metal- and additive-free conditions. N-Hydroxyphthalimide esters derived from chain, cyclic, primary, secondary, and tertiary carboxylic acids with a broad scope proved to be suitable substrates. This operationally simple protocol performed in an undivided cell under constant-current
(Thio)etherification of Quinoxalinones under Visible‐Light Photoredox Catalysis
作者:Jiadi Zhou、Peng Zhou、Tingting Zhao、Quanlei Ren、Jianjun Li
DOI:10.1002/adsc.201901008
日期:2019.12.3
An efficient visible‐light‐induced (thio)etherification of quinoxalin‐2(1H)‐ones with divergent aliphatic alcohols and thiols (primary, secondary, and tertiary) at room temperature in air has been developed. This protocol was highlighted by its mild conditions, readily available starting materials, operational simplicity, and wide functional group tolerance.