Efficient diastereoselective synthesis of a new class of azanucleosides: 2′-homoazanucleosides
作者:Jakob Bouton、Kristof Van Hecke、Serge Van Calenbergh
DOI:10.1016/j.tet.2017.05.083
日期:2017.7
Azanucleosides, sugar-modified nucleoside analogues containing a 4' nitrogen atom, have shown a lot of therapeutic potential, e.g. as anti-cancer and antiviral agents. We report the synthesis of a series of 2'-homoazanucleosides, in which the nucleobase is attached to the 2'-position of the pyrrolidine ring via a methylene linker. A suitable orthogonally protected iminosugar was synthesized by ring
氮杂核苷是含有 4' 氮原子的糖修饰核苷类似物,已显示出很大的治疗潜力,例如作为抗癌和抗病毒剂。我们报道了一系列 2'-同氮杂核苷的合成,其中核碱基通过亚甲基连接体连接到吡咯烷环的 2'-位置。以闭环复分解和二羟基化为关键步骤合成了合适的正交保护的亚氨基糖,并通过与适当保护的核碱基的Mitsunobu反应进一步转化为一系列8个核苷类似物。然后用硫醇进一步衍生腺嘌呤类似物的5'位,得到2种另外的化合物。评估最终化合物的生物活性。