The first direct ammonolysis of 2-thiouracil nucleosides to 2-thiocytosine nucleosides
作者:Lucjan Strekowski、Ibrahim M Abdou、Adel M.E Attia、Steven E Patterson
DOI:10.1016/s0040-4039(00)00712-7
日期:2000.6
Sugar-peracetylated 1-(beta-D-glucopyranosyl)-, 1-(beta-D-galactopyranosyl)-, and 1-(beta-D-xylopyranosyl)-6-aryl-5-cyano-2-thiouracils 2-4 and the corresponding 1-pyranosyl-2-(pyranosylthio)pyrimidines 5-7 undergo efficient ammonolysis (NH3/MeOH, 0-->23 degrees C, 16 h) to give the corresponding 1-(beta-D-pyranosyl)-6-aryl-5-cyano-2-thiocytosines. (C) 2000 Elsevier Science Ltd. All rights reserved.