Cyclophane-containing bis(2-amino-1,8-naphthyridine) moieties attached to variable linkers at the C2-position (linker B) were synthesized as cyclic mismatch-binding ligands (CMBLs). Ring-closing metathesis (RCM) is used as a key step for the introduction of double bonds at the linker B. Decreasing the size of the linker of the substrate, formation of the RCM products with an increasing trans/cis (E/Z)
合成了在C2位置(接头B)连接至可变接头的含环烷的双(2-
氨基-
1,8-萘啶)部分,作为环状错配结合
配体(CMBLs)。闭环复分解(RCM)被用作在连接子B引入双键的关键步骤。减小底物的连接子尺寸,形成具有增加的反式/顺式(E / Z)的RCM产品观察到该比率具有中等至高的总产量。对于具有较长接头(n = 3)的CMBL,观察到浓度依赖的荧光光谱,而对于具有较短接头(n = 2和/或1)的CMBL,观察到浓度无关的光谱,但存在明显的例外。Ë -烯烃6 一。还观察到随着溶剂疏
水性的增加,CMBLs的吸收和荧光光谱也随之变化。含99–100%
甲醇的溶液中CMBLs的吸收光谱和荧光光谱与单体相似。通过使用表面等离振子共振(
SPR)分析和圆二色性(CD)光谱研究了这些CMBL与重复DNA结构的结合行为。环状E-烯烃1a(n = 3)和3a(n = 2)与d(CCTG)9和d(CAG)9呈正交键合关系。然而,随着从化合物2b(n=