流感是全球数百万人的主要威胁。进入抑制剂对于开发新的流感治疗策略特别有意义。我们之前发现齐墩果酸 (OA) 是一种温和的流感血凝素 (HA) 抑制剂。在这项工作中,受 HA 作为同源三聚体受体的 3D 结构的启发,我们通过铜催化的叠氮化物-炔烃环加成反应设计并合成了 15 个具有不同接头和中心区域的 OA 三聚体。所有 OA 三聚体都在体外评估了它们的抗病毒活性,观察到12c、12e、13c和13d表现出强大的效力(IC 50在亚微摩尔范围内)对流感 A/WSN/33 (H1N1) 病毒的抵抗力强于使用奥司他韦观察到的病毒。此外,这些化合物还对 A/Hong Kong/4801/2014 和 B/Sichuan/531/2018 (BV) 表现出很强的生物活性。血凝抑制测定和表面等离子体共振结合测定的结果表明,这些 OA 三聚体可能会中断流感病毒 HA 蛋白与宿主细胞唾液酸受体之间的相互作
流感是全球数百万人的主要威胁。进入抑制剂对于开发新的流感治疗策略特别有意义。我们之前发现齐墩果酸 (OA) 是一种温和的流感血凝素 (HA) 抑制剂。在这项工作中,受 HA 作为同源三聚体受体的 3D 结构的启发,我们通过铜催化的叠氮化物-炔烃环加成反应设计并合成了 15 个具有不同接头和中心区域的 OA 三聚体。所有 OA 三聚体都在体外评估了它们的抗病毒活性,观察到12c、12e、13c和13d表现出强大的效力(IC 50在亚微摩尔范围内)对流感 A/WSN/33 (H1N1) 病毒的抵抗力强于使用奥司他韦观察到的病毒。此外,这些化合物还对 A/Hong Kong/4801/2014 和 B/Sichuan/531/2018 (BV) 表现出很强的生物活性。血凝抑制测定和表面等离子体共振结合测定的结果表明,这些 OA 三聚体可能会中断流感病毒 HA 蛋白与宿主细胞唾液酸受体之间的相互作
Silver‐Catalyzed Oxyphosphorylation of Unactivated Alkynes
作者:Binbin Liu、Qingmin Song、Zhaohong Liu、Zikun Wang
DOI:10.1002/adsc.202100226
日期:2021.7
Here, we describe an application of hydroazidation in the instant activation of alkynes for achieving the oxyphosphorylation of unactivated alkynes with diarylphosphinoyl radicals under mild reaction conditions. This reaction provides a method for accessing β-ketophosphine oxides and phosphorus-containing pyrroles.
Sulfinylsulfonation of alkynes to afford β-sulfinyl alkenylsulfone products with a broad substrate scope, excellent functional group compatibility, and high yield has been reported. Moreover, sulfinylsulfonation reaction of enyne can also be realized for constructing functionalized carbo- and heterocycles through a radical cascade cyclization process.
Synthesis of Bicyclic Imidazoles via [2 + 3] Cycloaddition between Nitriles and Regioselectively Generated α-Imino Gold Carbene Intermediates
作者:Yuanjing Xiao、Liming Zhang
DOI:10.1021/ol302102h
日期:2012.9.7
The cyclic alpha-imino gold carbene intermediate B is most likely generated in situ via regioselective nitrene transfer from an azido group to a tethered terminal alkyne in the presence of a gold catalyst and at ambient temperature. This highly electrophilic intermediate can react with a weakly nucleophilic nitrile, which is used as the reaction solvent, to deliver a bicyclic imidazole rapidly in an overall bimolecular [2 + 2 + 1] cycloaddition and in mostly serviceable yield. The competing intramolecular Huisgen reaction, although likely also catalyzed by gold, is minimized by using AuCl3 as the catalyst.
INTRAMOLECULAR AZIDE-ALKYNE CYCLOADDITION
申请人:Marcaurelle Lisa A.
公开号:US20100280238A1
公开(公告)日:2010-11-04
The Huisgen 1,3-dipolar cycloaddition is a ‘click’ reaction that results from the ligation of azides and alkynes to give a triazole moiety. This reaction has been shown to be effective in the formation of a variety of macrocyclic rings. A key point of interest is the regioselectivity and specificity of the cycloaddition. Disclosed herein are specific, selective, and high-yielding methods of azide-alkyne macrocyclization to form 1,4- and 1,5-triazoles and libraries thereof.
[EN] TYK2 DEGRADERS AND USES THEREOF<br/>[FR] AGENTS DE DÉGRADATION DE TYK2 ET LEURS UTILISATIONS
申请人:[en]KYMERA THERAPEUTICS, INC.
公开号:WO2023076161A1
公开(公告)日:2023-05-04
The present invention provides compounds, compositions thereof, and methods of using the same. Compounds and compositions thereof that are useful, for example, for targeting, inhibiting, and/or degrading TYK2. In certain embodiments, provided are TYK2 inhibitors and/or degraders and methods of making same. More specifically, TYK2 degraders, compositions which comprise TYK2 degraders, and methods of treating TYK2-associated conditions are provided.