Effective synthesis of nucleosides utilizing O-acetyl-glycosyl chlorides as glycosyl donors in the absence of catalyst: Mechanism revision and application to silyl-hilbert-johnson reaction

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Abstract

An effective synthesis of nucleosides using glycosyl chlorides as glycosyl donors in the absence of Lewis acid has been developed. Glycosyl chlorides have been shown to be pivotal intermediates in the classical silyl-Hilbert-Johnson reaction. A possible mechanism that differs from the currently accepted mechanism advanced by Vorbrueggen has been proposed and verified by experiments. In practice, this catalyst-free method provides easy access to Capecitabine in high yield.

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Liang, C., Ju, W., Ding, S., Sun, H., & Mao, G. (2017). Effective synthesis of nucleosides utilizing O-acetyl-glycosyl chlorides as glycosyl donors in the absence of catalyst: Mechanism revision and application to silyl-hilbert-johnson reaction. Molecules, 22(1). https://doi.org/10.3390/molecules22010084

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