Total Synthesis of 2‘,3‘,4‘,5‘,5‘ ‘-<sup>2</sup>H<sub>5</sub>-Ribonucleosides: The Key Building Blocks for NMR Structure Elucidation of Large RNA
作者:András Földesi、Anna Trifonova、Zoltán Dinya、Jyoti Chattopadhyaya
DOI:10.1021/jo010097n
日期:2001.10.1
The diastereospecific chemical syntheses of uridine-2',3',4',5',5' '-(2)H(5) (21a), adenosine-2',3',4',5',5' '-(2)H(5) (21b), cytidine-2',3',4',5',5' '-(2)H(5)(2)H(5) (21c), and guanosine-2',3',4',5',5' '-(2)H(5) (21d) (>97 atom % (2)H at C2', C3', C4', and C5'/C5' ') have been achieved for their use in the solution NMR structure determination of oligo-RNA by the Uppsala "NMR-window" concept (refs
尿苷2',3',4',5',5''-(2)H(5)(21a),
腺苷2',3',4',5',5'的非对映特异性
化学合成'-(2)H(5)(21b),
胞苷2',3',4',5',5''-(2)H(5)(2)H(5)(21c)和
鸟嘌呤-2',3',4',5',5''-(2)H(5)(21d)(在C2',C3',C4'和C5'处> 97原子%(2)H已通过Uppsala的“ NMR窗口”概念(参考文献4a-c,5a,6)在寡
核苷酸的溶液NMR结构确定中使用/ C5''),其中小(1)H片段通过
氘代嵌段21a-d的结合,其余的通过NMR可见,而其余的通过NMR变得不可见。
氘化的
核糖核苷21a-d是通过适当保护的糖苷配基与1-O-
乙酰基-2,3,5-三-O-(4-
甲苯甲酰基)-α/β-D-
呋喃核糖-2缩合制备的,