摘要:
Synthesis of a novel 1',2'-oxetane-uridine bearing a 2'-C-methyl substituent, [1-(1',3'-O-anhydro-3'-Cmethyl-beta-D-psicofuranosyl)uracil], is described. Key to its construction was the use of 6-O-(p-toluoy1)1,2:3,4-di-O-isopropylidene-3-C-methyl-D-psicofuranose as a nucleosidation substrate, which itself was derived from D-fructose. Anti-HCV activity was examined for the corresponding triphosphate which was not found to be an inhibitor of HCV NS5B 1b wild type polymerase in vitro. The 1',2'-oxetane uridine triphosphate without 2'-C-methyl substitution was similarly inactive, however, the guanosine analog displayed modest inhibition (IC50= 10 mu M). (C) 2014 Elsevier Ltd. All rights reserved.