Intercalating nucleic acids (INAs) with insertion of N-(pyren-1-ylmethyl)-(3R,4R)-4-(hydroxymethyl)pyrrolidin-3-ol. DNA (RNA) duplex and DNA three-way junction stabilities
作者:Vyacheslav V. Filichev、Erik B. Pedersen
DOI:10.1039/b210335b
日期:2003.12.19
N-(Pyren-1-ylmethyl)-(3R,4R)-4-(hydroxymethyl)pyrrolidin-3-ol was synthesised from (3R,4R)-4-(hydroxymethyl)pyrrolidin-3-ol and (3R,4S)-4-[(1S)-1,2-dihydroxyethyl] pyrrolidin-3-ol using alkylation with 1-(chloromethyl)pyrene or reductive amination with pyrene-1-carbaldehyde and NaCNBH3. The incorporation of N-(pyren-1-ylmethyl)azasugar moiety into oligodeoxynucleotides (ODN) as a bulge to form an intercalating nucleic
由(3R,4R)-4-(羟甲基)吡咯烷酮-3-醇和(3R,4S)合成N-(吡喃-1-基甲基)-(3R,4R)-4-(羟甲基)吡咯烷-3-醇)-4-[(1S)-1,2-二羟乙基]吡咯烷-3-醇,使用1-(氯甲基)py进行烷基化或用or-1-甲醛和NaCNBH3进行还原胺化。将N-(pyren-1-ylmethyl)氮杂糖部分掺入寡脱氧核苷酸(ODN)中以形成插入核酸(INA)引起不稳定的INA-DNA双链体失稳,而INA-RNA双链体则严重不稳定观察到INA-DNA与INA-RNA双链体之间热稳定性的每个修饰相差9摄氏度。当嵌入剂部分作为凸起插入连接区域时,DNA三向连接(TWJ)的稳定性得到改善。