作者:Yoshiyuki Hari、Satoshi Obika、Minako Sakaki、Ken-ichiro Morio、Yuriko Yamagata、Takeshi Imanishi
DOI:10.1016/s0040-4020(02)00226-0
日期:2002.4
The effective synthesis of some C-nucleosides with 2′-O,4′-C-methylene bridged nucleic acid (2′,4′-BNA) modification was accomplished by using the coupling reaction of a tetrahydrofurancarbaldehyde 1 with the magnesium or lithium derivatives of aromatic heterocycles followed by the Mitsunobu cyclization. Moreover, it was clearly shown by 1H NMR spectra and X-ray crystallography that the sugar conformation
通过使用四氢呋喃甲醛1与镁或锂衍生物的偶联反应,完成了具有2'- O,4'- C-亚甲基桥连核酸(2',4'-BNA)修饰的某些C-核苷的有效合成芳香杂环,然后进行Mitsunobu环化。此外,通过1 H NMR谱和X射线晶体学清楚地表明,合成的C-核苷中的糖构象独立于核碱基,被固定为N-形式。