Use of the 1-(2-fluorophenyl)-4-methoxypiperidin-4-yl (Fpmp) protecting group in the solid-phase synthesis of oligo- and poly-ribonucleotides
作者:M. Vaman Rao、Colin B. Reese、Volker Schehimann、Pak Sang Yu
DOI:10.1039/p19930000043
日期:——
the use of building blocks in which two acid-labile groups, 1-(2-fluorophenyl)-4-methoxypiperidin-4-yl (Fpmp) and 9-phenylxanthen-9-yl (Px), respectively, are used to protect the 2′- and 5′-hydroxy functions of ribonucleoside building blocks. The adenine, cytosine and guanine base residues are protected with pivaloyl, benzoyl and phenylacetyl groups, respectively. 2-Cyanoethyl N,N-diisopropylphosphoramidites
描述了一种寡核苷酸和多核糖核苷酸的固相合成方法。合成策略涉及使用结构单元,其中两个酸不稳定基团分别为1-(2-氟苯基)-4-甲氧基哌啶-4-基(Fpmp)和9-苯基黄嘌呤-9-基(Px)用于保护核糖核苷结构单元的2'-和5'-羟基功能。腺嘌呤,胞嘧啶和鸟嘌呤碱基残基分别被新戊酰基,苯甲酰基和苯乙酰基保护。在耦合步骤中使用了2-氰乙基N,N-二异丙基亚磷酰胺和5-(3-硝基苯基)-1 H-四唑用作活化剂。在链组装过程之后,从功能化的受控孔玻璃固相支持物中释放了2'-保护的寡核苷酸和多核糖核苷酸;它们是通过用0.01摩尔DM完全畅通之前后者稳定核糖核酸(RNA)序列纯化-3在室温下盐酸(pH值为2)20小时。酵母丙氨酸tRNA(3-mer,r [GGAGAGGUGUCCCCGGUUCGAUUCCGGACUCGUCCACCA])序列的3'端十聚体(r [UCGUCCACCA]),九糖(r [AU