Enzymatic 1,4-addition of 2-hydroxy-3-keto-glucal for β-selective aryl-C-glycosylation of polyphenols
Abstract
3-Ketoglycals are versatile Michael acceptors widely used in chemical C-glycosylation. Here, we report the enzymatic equivalent of this transformation, catalysed by a 3-keto-C-glycoside lyase, enabling selective C-glycosylation of polyphenolic natural products. The reaction proceeds with remarkable chemo- and stereo-selectivity, affording aryl-C-β-glycosides.
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