制备了带有新型荧光化合物并带有偶极异喹啉咪唑并[1,2- a ]嗪核心的寡核苷酸。熔解曲线的分析表明,在其末端带有这些荧光标记的DNA双链体的DNA双链体稳定性略有增加。分析了寡核苷酸缀合物的紫外线吸收和荧光性质。荧光标记对双链体形成敏感,因为在366 nm处也观察到协同熔解曲线,并且变性后荧光具有很大的增加。细胞摄取研究允许观察这些荧光标记的寡核苷酸内在HeLa细胞中。
Multicomponent Access to Functionalized Mesoionic Structures Based on TFAA Activation of Isocyanides: Novel Domino Reactions
作者:María José Arévalo、Nicola Kielland、Carme Masdeu、Miriam Miguel、Nicolas Isambert、Rodolfo Lavilla
DOI:10.1002/ejoc.200801084
日期:2009.2
The reactions of azines (isoquinolines, pyridine) with TFAA and isocyanides in a new domino process yield mesoionic acid fluorides with an imidazo[1,2-a]azine core. This multicomponentreaction has a general character, tolerating a wide range of substitution patterns on each component, and displays an unprecedented arrangement of reaction pathways. The protocol allows the incorporation of a fourth