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 receptor recognition, 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)