Synthesis and Photophysical Studies on N1-(2′-O,4′-C-Methyleneribofurano-nucleoside-3′-yl)-C4-(coumarin-7-oxymethyl)-1,2,3-triazoles
作者:Smriti Srivastava、Vipin K. Maikhuri、Rajesh Kumar、Kapil Bohra、Harbansh Singla、Jyotirmoy Maity、Ashok K. Prasad
DOI:10.1016/j.carres.2018.09.007
日期:2018.12
A series of eight N1-(2'-O,4'-C-methylene-β-D-ribofuranonucleoside-3'-yl)-C4-(coumarin-7-oxymethyl)-1,2,3-triazoles have been synthesized by Cu(I)-catalyzed azide-alkyne cycloaddition reaction of 3'-azido-3'-deoxy-2'-O,4'-C-methyleneuridine and 3'-azido-3'-deoxy-2'-O,4'-C-methylene-5-methyluridine with 7-propargyloxy coumarins in 82-88% yields. The synthesized coumarintriazolyl-bicyclonucleoside conjugates
一系列的八个N1-(2'-O,4'-C-亚甲基-β-D-呋喃核糖核苷-3'-基)-C4-(香豆素-7-氧甲基)-1,2,3-三唑由Cu(I)催化的3'-叠氮基-3'-脱氧-2'-O,4'-C-亚甲基尿苷和3'-叠氮基-3'-脱氧-2'-O的叠氮化物-炔烃环加成反应合成带有7-炔丙氧基香豆素的4,-C-亚甲基-5-甲基尿苷,产率为82-88%。合成的香豆素三唑基-双环核苷共轭物在核苷部分的2'-O和4'-C之间具有一个额外的桥,这有利于其预组织为N型糖折叠。通过对一种共轭物,即在N1-(3'-脱氧-2'-O,4'-C-亚甲基-5-甲基尿素-3'-基)-C4-上的X射线晶体结构研究证实了这一点。 (4-苯基香豆素-7-氧甲基)-1,2,3-三唑。