Synthesis and biological evaluation of new pyrazole- and tetrazole-related C-nucleosides with modified sugar moieties
作者:Mirjana Popsavin、Ljilja Torović、Saša Spaić、Srdjan Stankov、Agneš Kapor、Zoran Tomić、Velimir Popsavin
DOI:10.1016/s0040-4020(01)01126-7
日期:2002.1
3(5)-Carboxamido-4-(beta-D-ribofuranosyl)pyrazoles bearing 2'-benzamido (15) and 3'-mesyloxy (29) isosteric groups, as well as the tetrazole C-nucleosides with 2-benzamido-2-deoxy-beta-D-ribofuranose (19) and 3-azido-3-deoxy-beta-D-xylofuranose (36) as sugar segments, have been synthesized starting from D-glucose, by utilizing the 2,5-anhydro-D-glucose ethylene acetal derivatives 1 and 20 as divergent intermediates. The C-nucleosides 15 and 36 were shown to be moderate inhibitors of the in vitro growth of both N2a and BHK 21 tumour cell lines, whereas 29 showed a selective, although not potent cytotoxic activity against N2a cells. Compound 29 also showed a moderate in vitro antiviral activity towards the rabies virus. (C) 2002 Elsevier Science Ltd. All rights reserved.