Nucleophilic N<sup>1</sup> → N<sup>3</sup> Rearrangement of 5′-O-Trityl-O<sup>2</sup>,3′-Cycloanhydrothymidine
作者:Xian-Bin Yang、Konrad Misiura、Wojciech J. Stec、Marek J. Potrzebowski、Sławomir Kaźmierski、Michał Wieczorek、Wiesław R. Majzner、Grzegorz D. Bujacz
DOI:10.1080/15257770008045451
日期:2000.10
5'-0-Trityl-O-2,3'-cycloanhydrothymidine (1) heated at 150 degreesC in the presence of O,O-diethyl phosphate or O,O-diethyl phosphorothioate anions undergoes rearrangement into N-3-isomer (2); its structure was established by both advanced NMR methods and X-ray crystallographic studies. The most probable mechanism of 1-->2 rearrangement relies upon reversibility of glycosidic bond cleavage process.