作者:Giorgia Oliviero、Jussara Amato、Nicola Borbone、Stefano D'Errico、Gennaro Piccialli、Enrico Bucci、Vincenzo Piccialli、Luciano Mayol
DOI:10.1016/j.tet.2008.04.071
日期:2008.6
Herein, we report the solid-phase synthesis of several 5-aminoimidazole-4-(N-alkyl)carboxamide-1-ribosides (4-N-alkyl AICARs) and the corresponding 2',3'-secoriboside derivatives. The method uses the N-1-dinitrophenyl-inosine 5'-bonded to a solid support. This inosine derivative has the C-2 of the purine base strongly activated towards the attack of N-nucleophiles thus allowing the preparation of several N-1 alkylated inosine supports from which a small library of 4-N-alkyl AICAR derivatives has been synthesized. A set of new 4-N-alkyl AICA-2',3'-secoriboside derivatives have also been obtained in high yields by solid-phase cleavage of the 2',3'-ribose bond. (c) 2008 Elsevier Ltd. All rights reserved.