Synthesis, Base Pairing, and Fluorescence Properties of Oligonucleotides Containing 1H-Pyrazolo[3,4-d]pyrimidin-6-amine (8-Aza-7-deazapurin-2-amine) as an Analogue of Purin-2-amine
作者:Frank Seela、Georg Becher
DOI:10.1002/(sici)1522-2675(20000510)83:5<928::aid-hlca928>3.0.co;2-5
日期:2000.5.10
less stable than those containing 2′-deoxyadenosine, while their CD spectra are rather different. The fluorescence of the nucleosides is strongly quenched (>95%) in single-stranded as well as in duplex DNA. The residual fluorescence was used to determine the melting profiles, which gave Tm values similar to those determined from the UV melting curves.
分别合成 8-aza-7-deazapurin-2-amine (=1H-pyrazolo[3,4-d]pyrimidin) 的 N9- 和 N8-(β-D-2'-deoxyribonucleosides) 2 和 10 -6-胺)进行了描述。测定了 2 的荧光性质和 N-糖基键的稳定性,并分别与 purin-2-amine 和 7-deazapurin-2-amine 的 2'-脱氧核糖核苷 1 和 3 进行了比较。由核苷2制备亚磷酰胺14,合成寡核苷酸。含有化合物 1 或 2 的双链体比含有 2'-脱氧腺苷的双链体稍微不稳定,而它们的 CD 光谱则大不相同。核苷的荧光在单链和双链 DNA 中被强烈淬灭 (>95%)。残余荧光用于确定熔解曲线,