Stereoselective synthesis of 1-deoxy-1-ethynyl-β-d-ribofuranose as a versatile scaffold
作者:Yoshiaki Kitamura、Kana Edayoshi、Yukio Kitade
DOI:10.1016/j.tetlet.2012.10.053
日期:2012.12
We have developed an efficientstereoselectivesynthesis of 1-deoxy-1-ethynyl-β-d-ribofuranose (RE), via the β-selective cyanation of the anomeric position of 1-O-acetyl-2,3,5-tri-O-benzoyl-β-d-ribofuranose. Under conditions for copper(I)-catalyzed alkyne–azide 1,3-dipolar cycloaddition, the cycloaddition of RE with 4-fluorobenzylazide was accomplished within 5 min, to afford the corresponding triazole
我们通过1- O-乙酰基-2,3,5-tri的异头位置的β-选择性氰化,开发了一种有效的立体选择性合成1-脱氧-1-乙炔基-β - d-核呋喃糖(R E)- Ø苯甲酰基β- d -ribofuranose。在铜(I)催化的炔-叠氮化物1,3-偶极环加成的条件下,R E与4-氟苄基叠氮的环加成反应在5分钟内完成,从而以定量收率得到了相应的三唑核糖核苷。