USE OF 3,4-DIMETHOXYBENZYL GROUP AS A PROTECTING GROUP FOR THE 2′-HYDROXYL GROUP IN THE SYNTHESIS OF OLIGORIBONUCLEOTIDES
作者:Hiroshi Takaku、Tsunehiko Ito、Kazuaki Imai
DOI:10.1246/cl.1986.1005
日期:1986.6.5
4-dimethoxybenzyl group was introduced to the 2′-hydroxyl group by the reaction of nucleosides with 3,4-dimethoxybenzyl trichloroacetimidate or 3,4-dimethoxybenzyl bromide-NaH. Further, this group can be used as a protecting group for the O6-amide group of the guanine residue. The protected nucleosides are useful starting materials for the synthesis of oligoribonucleotides. The 3,4-dimethoxybenzyl group was removed
通过核苷与 3,4-二甲氧基苄基三氯乙酰亚胺或 3,4-二甲氧基苄基溴-NaH 的反应,将 3,4-二甲氧基苄基引入 2'-羟基。此外,该基团可用作鸟嘌呤残基的O6-酰胺基团的保护基团。受保护的核苷是合成寡核糖核苷酸的有用起始材料。通过用氧化剂处理,3,4-二甲氧基苄基从寡核糖核苷酸中迅速去除,而对糖苷键没有任何损害。