Synthesis and Properties of 2?-Deoxy-1?,2?-seco-D-ribosyl (5? ? 3?)oligonucleotides (= 1?,2?-seco-DNA) containing adenine and thymine
作者:Ling Peng、Hans-Jorg Roth
DOI:10.1002/hlca.19970800513
日期:1997.8.11
Some 2′-deoxy-1′,2′-seco-D-ribosyl (5′3′)oligonucleotides (= 1′,2′-seco-DNA), differing from natural DNA only by a bond scission between the centers C(1′) and C(2′), were synthesized and studied in order to compare their structure properties and pairing behavior with those of corresponding natural DNA and homo-DNA oligonucleotides (2′,3′-dideoxy-β-D-glucopyranosyl oligonucleotides). Starting from (−)-D-tartaric
一些2'-deoxy-1',2'-seco-D-核糖基(5'3')寡核苷酸(= 1',2'-seco-DNA)与天然DNA的区别仅在于中心C之间的键断裂合成和研究(1')和C(2'),以便将其结构特性和配对行为与相应的天然DNA和homo-DNA寡核苷酸(2',3'-双脱氧-β-D-葡萄糖基吡喃糖基)进行比较寡核苷酸)。从(-)-D-酒石酸开始,以纯结晶形式获得2′-脱氧-1′,2′-仲腺苷衍生物9a和1′,2′-胸苷(9b)。使用亚磷酸三酯法的亚磷酰胺变体,在溶液中合成了二核苷酸单磷酸1',2'-seco-d(T 2),而寡核苷酸1',2'-seco-d [(AT)6 ], 1′,2′-seco-d(A10)和1',2'-seco-d(T 10)是通过固相法通过自动或手动技术制备的。UV和CD光谱以及凝胶电泳的结果表明,腺嘌呤-胸腺嘧啶碱基配对(在天然DNA和homo-DNA中观察到)或