为了从已经包含修饰的构建块合成 2'-O-氨基甲酰基甲基修饰的寡核苷酸,我们对 2'-O-氨基甲酰基甲基修饰的二核苷酸的化学和酶稳定性进行了研究。二核苷酸经过氨解和其他碱性条件,如在不同温度下用乙二胺和氢氧化钠处理。氨基甲酰基甲基的酰胺在寡核苷酸合成的标准脱保护条件下部分水解(55°C 下的浓氨水)。然而,在其他几种条件下,包括甲醇中的饱和 NH3,酰胺保持完整。用来自金刚鹦鹉毒液的磷酸二酯酶 I 和来自牛脾的磷酸二酯酶 II 处理二核苷酸,
In order to obtain higher quality 2 ′-O-carbamoylmethyl oligoribonucleotides we are conducting studies of this modification. Here we present synthesis of 2 ′-O-carbamoylmethyl containing H-phosphonate building blocks as well as synthesis of model dinucleotides needed for these studies.