Study on Disulfur-backboned Nucleic Acid: Part 2. Efficient Synthesis of 3′,5′-Dithiothymidine
作者:Hua Wang、Changmei Cheng、Hongchao Zheng、Xiaohong Liu、Chang Fang、Shanshan Xu、Yufen Zhao
DOI:10.1246/cl.2005.432
日期:2005.3
novel and convenient procedure for synthesizing 3',5'-dithiothymidine was described. In this procedure, DBU was used to form the intramolecular ring of 2,3'-anhydrothymidine and then the thioacetic acid was used as solvent as well as the nucleophilic reagent to produce S-acetyl-3'-thiothymidine. A very efficient deprotection step was applied to afford the target compound, which can avoid the oxidization
描述了一种新的和方便的合成 3',5'-二硫胸苷的方法。在此过程中,DBU 用于形成 2,3'-脱水胸苷的分子内环,然后使用硫代乙酸作为溶剂和亲核试剂以生产 S-乙酰基-3'-硫代胸苷。应用非常有效的脱保护步骤来提供目标化合物,这可以避免硫醇基团的氧化。并且发现关键中间体 5'-O-tosyl-2,3'-脱水胸苷对不同的亲核试剂具有区域选择性。