申请人:WADA Takeshi
公开号:US20110178284A1
公开(公告)日:2011-07-21
A protective group represented by the following general formula (I) (the oxygen atom attached with * represents oxygen atom of 2′-hydroxyl group of a ribonucleoside, a ribonucleotide or a derivative thereof; R
1
and R
2
both represent hydrogen atom, or represent a halogen atom, a C
1-6
alkyl group, or a C
1-6
halo-substituted alkyl group; R
3
and R
4
represent hydrogen atom, a halogen atom, a C
1-6
alkyl group, or a C
1-6
halo-substituted alkyl group; and R
5
and R
6
represent a halogen atom, a C
1-6
halo-substituted alkyl group, cyano group, nitro group, or the like), which is stable under the reaction conditions of the nucleic acid synthetic cycles and has little steric hindrance, and can be removed under mild conditions using fluoride ions as a base.
一个保护基团,其通式为(I)(带有*的氧原子代表核苷酸、核苷酸衍生物或其衍生物的2'-羟基氧原子;R1和R2均代表氢原子,或代表卤素原子、C1-6烷基或C1-6卤代烷基;R3和R4代表氢原子、卤素原子、C1-6烷基或C1-6卤代烷基;R5和R6代表卤素原子、C1-6卤代烷基、氰基、硝基或类似物),在核酸合成循环的反应条件下稳定,且具有较小的空间位阻,可以在温和条件下使用氟化物离子作为碱剂去除。