The synthesis of acyclic N4-substituted cytosine nucleoside phosphonates using a microwave-assisted N4-silylation-amination and olefin cross-metathesis as key assembly steps is described. The microwave-assisted silylation-amination is compared to a conventional heating protocol. While yields and purities of the coupling products were comparable under both conditions, microwave heating allows a significant acceleration of the reaction (from 48 h to 5 h).
描述了一种合成非环状N4取代
胞苷磷酸酯的方法,采用微波辅助的N4
硅烷化-胺化和烯烃交叉复分解作为关键组装步骤。将微波辅助的
硅烷化-胺化与传统加热方法进行了比较。虽然在这两种条件下,耦合产物的产率和纯度相似,但微波加热显著加速了反应(从48小时缩短到5小时)。