Synthesis and structural studies of S-type/N-type-locked/frozen nucleoside analogues and their incorporation in RNA-selective, nuclease resistant 2′–5′ linked oligonucleotides
摘要:
合成了 2 内锁或冷冻(S 型)/3 内锁或冷冻(N 型)核苷类似物。根据 3JHH 和 NOE 测量结果进行的构象分析得到了 X 射线晶体结构研究的进一步证实。利用这些修饰的核苷类似物合成了 2â²â5â² isoDNA 寡核苷酸 (ON),对由此产生的 2â²â5â² isoDNA:âRNA 双链体进行的 UV-Tm 研究反映了位点和序列依赖性效应,并证实在这类双链体中,S 型糖构象比 N 型糖几何构象更受青睐。
Synthesis and structural studies of S-type/N-type-locked/frozen nucleoside analogues and their incorporation in RNA-selective, nuclease resistant 2′–5′ linked oligonucleotides
摘要:
合成了 2 内锁或冷冻(S 型)/3 内锁或冷冻(N 型)核苷类似物。根据 3JHH 和 NOE 测量结果进行的构象分析得到了 X 射线晶体结构研究的进一步证实。利用这些修饰的核苷类似物合成了 2â²â5â² isoDNA 寡核苷酸 (ON),对由此产生的 2â²â5â² isoDNA:âRNA 双链体进行的 UV-Tm 研究反映了位点和序列依赖性效应,并证实在这类双链体中,S 型糖构象比 N 型糖几何构象更受青睐。
Synthesis and structural studies of S-type/N-type-locked/frozen nucleoside analogues and their incorporation in RNA-selective, nuclease resistant 2′–5′ linked oligonucleotides
作者:Namrata Erande、Anita D. Gunjal、Moneesha Fernandes、Rajesh Gonnade、Vaijayanti A. Kumar
DOI:10.1039/c2ob26762d
日期:——
2â²-endo locked or frozen (S-type)/3â²-endo locked or frozen (N-type) nucleoside analogues were synthesized. Conformational analysis based on 3JHH and NOE measurements is presented which is further confirmed by X-ray crystal structural studies. 2â²â5â² isoDNA oligonucleotides (ON) were synthesized using these modified nucleoside analogues and UV-Tm studies of the resultant 2â²â5â² isoDNAâ:âRNA duplexes reflect the site- and sequence-dependent effects and confirm that the S-type sugar conformations were preferred over the N-type sugar geometry in such duplexes.
合成了 2 内锁或冷冻(S 型)/3 内锁或冷冻(N 型)核苷类似物。根据 3JHH 和 NOE 测量结果进行的构象分析得到了 X 射线晶体结构研究的进一步证实。利用这些修饰的核苷类似物合成了 2â²â5â² isoDNA 寡核苷酸 (ON),对由此产生的 2â²â5â² isoDNA:âRNA 双链体进行的 UV-Tm 研究反映了位点和序列依赖性效应,并证实在这类双链体中,S 型糖构象比 N 型糖几何构象更受青睐。