Synthesis of 3-(2-deoxy-β-d-ribofuranosyl)pyridin-2-one and 2-amino-6-(N,N-dimethylamino)-9-(2-deoxy-β-d-ribofuranosyl)purine derivatives for an unnatural base pair
作者:Masahide Ishikawa、Ichiro Hirao、Shigeyuki Yokoyama
DOI:10.1016/s0040-4039(00)00520-7
日期:2000.5
An unnatural base pair, 2-amino-6-(N,N-dimethylamino)purine (denoted x) and pyridin-2-one (denoted y), was designed to prove the structural requirements for base pair formation involving shape complementarity. It was expected that y might satisfy the structural requirements for pairing with x, in which the bulky 6-dimethylamino group may eliminate base pairing with the natural bases. As chemical or biological substrates for DNA synthesis, the phosphoramidite of x and the 2'-deoxy-C3-ribonucleoside triphosphate of y (dyTP) were synthesized, and the incorporation experiment was demonstrated by using the Klenow fragment of Escherichia call DNA polymerase I. (C) 2000 Elsevier Science Ltd. All rights reserved.