2-Ethynylnaphthalene-modified 8-aza-3,7-dideaza-2′-deoxyadenosine derivative discriminates thymine in target DNA via changes in the fluorescence wavelength
作者:Shoutoku Koboku、Masaki Yanagi、Ayaka Funato、Azusa Suzuki、Yoshio Saito
DOI:10.1016/j.tetlet.2020.151841
日期:2020.5
2a37zA (1c), switched emission modes between the ICT and the locally excited states by changing their molecular geometry. With their electron-withdrawing substituents, 2c37zA (1b) and 2a37zA (1c) had a wide range of fluorescence wavelength that was due to the combination of these two emission modes (Δλ = 142 and 96 nm, respectively). In the ODN duplexes, 2c37zA (1b) formed a stable base pair with thymine
开发了新型的环境敏感型荧光嘌呤核苷2n37z A(1a),2c37z A(1b)和2a37z A(1c)。其中,与先前报道的1n37z A(2)(约50-120 nm)相比,含有吸电子取代基的2c37z A(1b)和2a37z A(1c)表现出高度的溶剂化性,并发出更长的波长。 。新开发的2-乙炔基萘衍生物2n37z A(1a),2c37z A(1b)和2a37z A(1c)通过改变它们的分子几何结构在ICT和局部激发态之间切换发射模式。有了它们的吸电子取代基,2c37z A(1b)和2a37z A(1c)具有很宽的荧光波长范围,这是由于这两种发射模式的组合(分别为Δλ= 142和96 nm)。在ODN双工中,2c37z A(1b)与胸腺嘧啶形成稳定的碱基对,并能够通过各自的荧光波长偏移来区分。因此,2c37z A(1b)可用于检测靶核酸序列中的单碱基改变。