[EN] 2, 6-DI-NITROGEN-CONTAINING SUBSTITUTED PURINE DERIVATIVE, AND PREPARATION METHOD, PHARMACEUTICAL COMPOSITION AND USE THEREOF<br/>[FR] DÉRIVÉ DE PURINE SUBSTITUÉ CONTENANT DE L'AZOTE 2, 6-DI ET SON PROCÉDÉ DE PRÉPARATION, COMPOSITION PHARMACEUTIQUE ET UTILISATION DE CELLE-CI
l-ProT catalyzed highly regioselective N-alkoxyalkylation of purine rings with vinyl ethers
作者:Jian-Jun Li、Xing-Xing Gui
DOI:10.1016/j.cclet.2014.04.023
日期:2014.10
An efficient and regioselective synthesis of N-9 alkoxyalkylated purine nucleoside derivatives was achieved via the N-alkoxyalkylation of purine rings with vinyl ethers catalyzed by L-ProT. The advantages of this protocol include good to excellent yield, mild reaction condition, and simple manipulation. A plausible mechanism for the transformation was given. (C) 2014 Jian-Jun Li. Published by Elsevier B.V. on behalf of Chinese Chemical Society. All rights reserved.
CuBr Catalyzed C–N cross coupling reaction of purines and diaryliodonium salts to 9-arylpurines
CuBr was found to be an efficient catalyst for the C–N crosscouplingreaction of purine and diaryliodonium salts. 9-Arylpurines were synthesized in excellent yields with short reaction times (2.5 h). The method represents an alternative to the synthesis of 9-arylpurines viaCu(II) catalyzed C–N couplingreaction with arylboronicacids as arylating agents.
purine nucleosides was developed via the direct nucleophilic substitution reaction of 6-chloropurine derivatives with variousmild nucleophiles. The eco-friendly solvent-free process gave good to high isolated yields within a short reaction time (5 min) under microwave irradiated conditions.