Direct and practical synthesis of 2′-O,4′-C-aminomethylene-bridged nucleic acid purine derivatives by transglycosylation
作者:Tadashi Umemoto、Shinichi Masada、Kenichi Miyata、Mari Ogasawara-Shimizu、Shumpei Murata、Kazunori Nishi、Kazuhiro Ogi、Yoji Hayase、Nobuo Cho
DOI:10.1016/j.tet.2017.01.010
日期:2017.3
Purine nucleosides of 2′-O,4′-C-aminomethylene-bridged nucleic acid (BNANC) have been directly synthesized from pyrimidine BNANC using transglycosylation reaction with high stereoselectivity and excellent yield. The BNANC purine nucleosides (adenosine, guanosine, and inosine) prepared by the direct and practical procedure were derivatized to the corresponding phosphoramidites and were incorporated
2'- O,4'- C-氨基亚甲基桥连核酸(BNA NC)的嘌呤核苷已通过嘧啶BNA NC的立体糖基化反应高立体选择性和高收率直接合成。通过直接和实际操作制备的BNA NC嘌呤核苷(腺苷,鸟苷和肌苷)被衍生为相应的亚磷酰胺,并掺入DNA中。热变性研究表明,含BNA NC的寡核苷酸可选择性地与RNA杂交,并具有出色的错配识别能力。