2-Dialkynyl derivatives of (N)-methanocarba nucleosides: ‘Clickable’ A3 adenosine receptor-selective agonists
作者:Dilip K. Tosh、Moshe Chinn、Lena S. Yoo、Dong Wook Kang、Hans Luecke、Zhan-Guo Gao、Kenneth A. Jacobson
DOI:10.1016/j.bmc.2009.12.018
日期:2010.1
nucleoside 5′-uronamides to contain dialkyne groups on an extended adenine C2 substituent, as synthetic intermediates leading to potent and selective A3 adenosine receptor (AR) agonists. The proximal alkyne was intended to promote receptorrecognition, and the distal alkyne reacted with azides to form triazole derivatives (click cycloaddition). Click chemistry was utilized to couple an octadiynyl A3AR
我们修饰了一系列 (N)-methanocarba 核苷 5'-uronamides 以在扩展的腺嘌呤 C2 取代基上包含二炔基团,作为合成中间体,导致有效和选择性的 A 3腺苷受体 (AR) 激动剂。近端炔烃旨在促进受体识别,远端炔烃与叠氮化物反应形成三唑衍生物(点击环加成)。利用点击化学将八炔基 A 3 AR 激动剂偶联到含叠氮基的荧光、化学反应性、生物素化和其他部分,保留与 A 3 AR的选择性结合。引入了双功能硫醇反应性交联剂。最有效和最具选择性的新化合物是 1-金刚烷基衍生物 ( K i6.5 nM),尽管一些点击产品的K i值在 200-400 nM 的范围内。其他有效的选择性衍生物(K i at A 3 AR in nM)被用作可能的受体亲和标记:3-nitro-4-fluorophenyl (10.6), α-bromophenacyl (9.6), 硫醇反应性异噻唑酮 (102)
Design and synthesis of a vialinin A analog with a potent inhibitory activity of TNF-α production and its transformation into a couple of bioprobes
Vialinin A (1) is an extremely potent inhibitor against tumor necrosis factor (TNF)-α production in rat basophilic leukemia (RBL-2H3) cells. This Letter describes the design and synthesis of its advanced analog, 5′,6′-dimethyl-1,1′:4′1″-terphenyl-2′,3′,4,4″-tetraol (2) with a comparable inhibitory activity (IC50 = 0.02 nM) to that of 1. The synthesis involved double Suzuki–Miyaura coupling as a key
ABSTRACT Vialinin B is a natural 3-phenyldibenzo[b,d]furan product with a powerful inhibitory activity against tumor necrosis factor (TNF)–α production. This article describes the synthesis of three types of biotinylated p-terphenyls designed for clarifying the target molecule of vialinin B. Construction of the carbon backbone of the core was accomplished by stepwise Suzuki–Miyaura coupling while the
摘要 Vialinin B 是一种天然的 3-苯基二苯并[b,d]呋喃产物,对肿瘤坏死因子 (TNF)-α 的产生具有强大的抑制活性。本文描述了三种类型的生物素化对三联苯的合成,旨在阐明小鸟苷 B 的目标分子。核心碳骨架的构建通过逐步 Suzuki-Miyaura 偶联完成,而苯基二苯并呋喃部分则由 Ullmann 构建反应。生物素单元通过点击化学连接。图形概要
[EN] MULTIPLEXING TARGETING LIGANDS THROUGH CLICK CHEMISTRY AT THE ANOMERIC SITE OF SUGARS<br/>[FR] MULTIPLEXAGE CIBLANT DES LIGANDS PAR CHIMIE CLIC AU NIVEAU DU SITE ANOMÉRIQUE DE SUCRES
申请人:[en]ALNYLAM PHARMACEUTICALS, INC.
公开号:WO2023288047A2
公开(公告)日:2023-01-19
The present disclosure relates generally to monomers and methods for conjugating one or more ligands to oligonucleotides by Click chemistry at the anomeric site of pentose sugars, such as pentose sugars or hexose sugars.
Clickable polyglycerol hyperbranched polymers and their application to gold nanoparticles and acid-labile nanocarriers
作者:Andrew Zill、Alexandra L. Rutz、Richie E. Kohman、Alaaldin M. Alkilany、Catherine J. Murphy、Hyunjoon Kong、Steven C. Zimmerman
DOI:10.1039/c0cc04096g
日期:——
A one-step, large-scale preparation of alkyne-containing hyper-branched polyglycerols (HPG) is reported. The HPGs undergo click reactions to organic azides allowing a range of applications.