Facile synthesis of 2′-O-cyanoethyluridine by ring-opening reaction of 2,2′-anhydrouridine with cyanoethyl trimethylsilyl ether in the presence of BF3·Et2O
作者:Hisao Saneyoshi、Itaru Okamoto、Yoshiaki Masaki、Akihiro Ohkubo、Kohji Seio、Mitsuo Sekine
DOI:10.1016/j.tetlet.2007.09.105
日期:2007.11
In this Letter, a facile method for the synthesis of 2′-O-cyanoethyluridine, which is a key intermediate in the synthesis of fully and partially 2′-O-cyanoethylated oligoribonucleotides as well as unmodified oligoribonucleotides, was developed by the ring-opening reaction of 2,2′-anhydrouridine with 2-cyanoethyl trimethylsilyl ether in the presence of BF3·Et2O in dimethylacetamide. The 2′-O-cyanoethyluridine
在这种信,对于2'-合成的简便方法Ô -cyanoethyluridine,这是在充分的合成部分2'-O-氰乙基化寡核糖核苷酸以及未修饰的寡核糖核苷酸的关键中间体,并通过开环开发BF 3 ·Et 2 O存在下,在二甲基乙酰胺中,使2,2'-脱水尿苷与2-氰基乙基三甲基甲硅烷基醚反应。2'- Ô -cyanoethyluridine 3'-亚磷酰胺衍生物转化成2'- ø氰乙基-4- Ñ由一系列涉及4-取代反应(1个-acetylcytidine 3'-亚磷酰胺衍生物ħ-1,2,4-三唑-1-基)尿苷衍生物与氨的反应,然后进行乙酰化。