Regiodefined synthesis and conformational properties of adenyldiyl trimers with unsymmetrical 2′–5′ and 3′–5′ internucleotide linkages
作者:Yoshihiro Hayakawa、Masaaki Hirose、Ryoji Noyori
DOI:10.1016/0040-4020(95)00590-5
日期:——
Adenyldiyl trimers with different kinds of substitucnts on 2′–5′ and 3′–5′ phosphate linkages have been synthesized in a general, regiodefined manner. Examination of the 2D NMR spectra reveals that the trimers with adenylyl(2′–5′)adenosine linkage make a syn-anti as well as syn-syn base slack between the two adenyl bases and exist as a mixture of the two conformers.
以一般的区域定义方式合成了在2'-5'和3'-5'磷酸键上具有不同取代基的Adenyldiyl三聚体。2D NMR谱图的检查表明,带有腺苷基(2'–5')腺苷键的三聚体在两个腺苷酸碱基之间形成顺-反和顺-syn-顺碱基松弛,并且以两个构象异构体的混合物形式存在。