A modified nucleotide given by the structure
wherein R¹ is a reactive group derivatizable with a detectable label, R² is an optional linking moiety including an amide, thioether or disulfide linkage or a combination thereof, R³ is selected from the group consisting of hydrogen, methyl, bromine, fluorine and iodine, R⁴ is selected from the group consisting of hydrogen, an acid-sensitive, base-stable blocking group or an acyl capping group, R⁵ is hydrogen or a phosphorus derivative, R⁶ is H, OH, or OR where R is an acid-sensitive, base-stable protecting group and x is an integer in the range of 1 and 8 inclusive.
结构如下的修饰核苷酸
其中 R¹ 是可衍生为可检测标记的活性基团,R² 是可选的连接基团,包括酰胺、
硫醚或二
硫键或它们的组合,R³ 选自氢、甲基、
溴、
氟和
碘组成的组、R⁴ 选自氢、对酸敏感、对碱稳定的封端基团或酰基封端基团组成的组,R⁵ 是氢或
磷衍
生物,R⁶ 是 H、OH 或 OR,其中 R 是对酸敏感、对碱稳定的保护基团,x 是 1 至 8(含 8)范围内的整数。