作者:Pankaj Gupta、Jyotirmoy Maity、Gaurav Shakya、Ashok K. Prasad、Virinder S. Parmar、Jesper Wengel
DOI:10.1039/b905019c
日期:——
Synthesis of α-L-arabino- and α-D-arabino-configured pentofuranosyl nucleosides of four of the natural bases [thymine (ara-T), adenine (ara-A), cytosine (ara-C) and guanine (ara-G)] is reported together with hybridization properties of oligonucleotides containing α-L-ara-T and -A, α-D-ara-T and -A, and 2′-amino-α-L-ara-T monomers. 2′-O-Acetylated α-L-ara-T, -A, -C and -G, α-D-ara-T, -A, -C and -G,
四个天然碱的α-L-阿拉伯糖和α-D-阿拉伯糖构型的呋喃呋喃糖基核苷的合成[胸腺嘧啶 (一只老鼠), 腺嘌呤 (ara-A), 胞嘧啶 (ara-C) 和 鸟嘌呤(ara-G)]与含有α-L-ara-T和-A,α-D-ara-T和-A以及2'-氨基-α-L-ara-T的寡核苷酸的杂交特性一起报道。单体。2' - O-乙酰化的α-L-ara-T,-A,-C和-G,α-D-ara-T,-A,-C和-G和N2'-酰化的α-L-合成了ara-T亚磷酰胺结构单元,并将其与标准DNA亚磷酰胺一起用于18-mer寡核苷酸的固相合成。热变性实验表明,掺入了三到六种阿拉伯糖-配置成DNA-寡核苷酸的单体降低了对反平行DNA / RNA补体的结合亲和力。完全修饰的α-L-ara-寡核苷酸不与DNA / RNA互补序列杂交,而证实了完全修饰的α-D-ara-寡核苷酸与互补DNA / RNA在平行链方向上的杂交。