摘要:
A series of ribonucleoside 1-alkynylphosphonates have been synthesized using a palladium-catalyzed phosphonylation of terminal 1,1-dibromo-1-alkene nucleosidic derivatives and high selectivity for product distribution was observed during this step. Both nucleosidic and osidic pathways were explored and the corresponding optimization study is reported herein. (C) 2009 Elsevier Ltd. All rights reserved.