2-Aza-2′-deoxyadenosine: Synthesis, Base-Pairing Selectivity, and Stacking Properties of Oligonucleotides
作者:Tamizi Sugiyama、Enno Schweinberger、Zygmunt Kazimierczuk、Natalya Ramzaeva、Helmut Rosemeyer、Frank Seela
DOI:10.1002/(sici)1521-3765(20000117)6:2<369::aid-chem369>3.0.co;2-2
日期:2000.1.17
2-Aza-2'-deoxyadenosine (2, z2Ad) is synthesized via its 1,N6-etheno derivative 7 and enzymatically deaminated to 2-aza-2'-deoxyinosine (3). Compound 2 is converted into the phosphoramidite building block 10b. This is employed in solid-phase oligonucleotide synthesis. The 2-azapurine base forms a strong base pair with guanine, but a much weaker one with adenine, thymine, and cytosine. Oligonucleotide
2-Aza-2'-脱氧腺苷(2,z2Ad)是通过其1,N6-乙炔衍生物7合成的,并被酶法脱氨基形成2-aza-2'-脱氧肌苷(3)。化合物2被转化为亚磷酰胺结构单元10b。这用于固相寡核苷酸合成中。2-氮杂嘌呤碱基与鸟嘌呤形成强碱基对,而与腺嘌呤,胸腺嘧啶和胞嘧啶则弱得多。合成了在一个或两个末端带有悬空核苷酸残基的寡核苷酸双链体,例如2-aza-2'-脱氧腺苷和7-deaza-2'-脱氧腺苷(4,c7Ad),并且双链体的热稳定性为与悬挂的核苷酸残基的疏水性相关。