Synthesis and Structure of Novel Conformationally Constrained 1‘,2‘-Azetidine-Fused Bicyclic Pyrimidine Nucleosides: Their Incorporation into Oligo-DNAs and Thermal Stability of the Heteroduplexes
作者:Dmytro Honcharenko、Oommen P. Varghese、Oleksandr Plashkevych、Jharna Barman、Jyoti Chattopadhyaya
DOI:10.1021/jo052115x
日期:2006.1.1
azetidine-fused furanose sugar is locked in a North-East conformation with pseudorotational phase angle (P) in the range of 44.5−53.8° and sugar puckering amplitude (φm) of 29.3−32.6° for the azetidine-modified T, U, C, and 5-Me-C nucleosides. Thermal denaturation studies of azetidine-modified oligo-DNA/RNA heteroduplexes show that the azetidine-fused nucleosides display improved binding affinities when compared