l-ProT catalyzed highly regioselective N-alkoxyalkylation of purine rings with vinyl ethers
摘要:
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.
Copper-catalyzed N-alkoxyalkylation of nucleobases involving direct functionalization of sp3 C–H bonds adjacent to oxygen atoms
作者:Rui Huang、Chunsong Xie、Lin Huang、Jinhua Liu
DOI:10.1016/j.tet.2012.11.020
日期:2013.1
N-Alkoxyalkylation of nucleobases was realized by the copper-catalyzed peroxide-promoted coupling of nucleobases with readily available saturated ethers. Both purines and pyrimidines could be N-alkoxyalkylated through this method in moderate to good yields. 2D-NMR revealed that N9-alkoxyalkylation preferentially occurred when purines were used in this reaction.
C–H Amination of Purine Derivatives via Radical Oxidative Coupling
作者:Zheng Luo、Ziyang Jiang、Wei Jiang、Dongen Lin
DOI:10.1021/acs.joc.8b00066
日期:2018.4.6
An oxidative coupling reaction between purines and alkyl ethers/benzyl compounds was developed to synthesize a series of N9 alkylated purine derivatives using n-Bu4NI as a catalyst and t-BuOOH as an oxidant. This protocol uses commercially available, inexpensive catalysts and oxidants and has a wide range of substrates with a simple operation.