Abstract

An efficient route to synthesize 3''- and 4'''-vinyl rutin esters has been developed by enzyme-catalyzed regioselective acylation of rutin with divinyl dicarboxylates in organic media. Alkaline protease from Bacillus subtilis provided 3''-O-substituted vinyl rutin esters in pyridine, and Novozym 435 gave 4'''-O-substituted vinyl rutin esters in tert-butanol.

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