The purpose of the present invention is to develop a system for efficiently constituting cyanoethyl ethers under mild conditions and probability of the ethers as functional groups for imparting specific functions and to make a contribution to the production of novel functional nucleic acids.
The present invention relates to a nucleoside that is represented by the general formula (I) or a nucleotide derived therefrom:
wherein X and Y may be the same as or different from each other, and are hydrogen, optionally substituted silyl group, 4-methoxytrityl group, 4,4′-dimethoxytrityl group or a group represented by the general formula (II):
wherein R1 and R2 may be the same as or different from each other, representing an alkyl group having 1-7 carbon atoms such as diisopropyl, or they are united with each other to form a ring structure, R3 represents a protective group for a phosphoric acid such as 2-cyanoethyl; and B1 represents an optionally substituted pyrimidine or purine base.
本发明的目的是开发一种在温和条件下高效构建
氰乙基醚的系统,并将醚作为功能基团赋予特定功能,从而对新型功能核酸的生产做出贡献。本发明涉及一种由通式(I)表示的核苷或其衍
生物:其中X和Y可以相同也可以不同,是氢、可选择的取代
硅基团、4-甲氧基三苄基基团、4,4'-二甲氧基三苄基基团或由通式(II)表示的基团:其中R1和R2可以相同也可以不同,代表具有1-7个碳原子的烷基基团,例如
二异丙基,或它们结合在一起形成环状结构,R3表示
磷酸的保护基团,例如2-
氰乙基;B1表示可选择的取代
嘧啶或
嘌呤碱基。