Abstract
AbstractAn efficient one‐pot enzymatic synthesis of cardiac glycosides with varied sugar chain lengths (average yield >80%) was carried out through sequential glycosylation using a steroid glycosyltransferase UGT74AN3 from Catharanthus roseus and a cyclodextrin glycosyltransferase from Bacillus licheniformis. A series of cardiac glycosides were obtained and showed enhanced affinity and selectivity for inhibition of the α2 isoform of Na+/K+‐ATPase. These findings demonstrate the significant potential of the one‐pot biocatalytic approach in the synthesis of diverse cardiac glycosides as potentially safer cardiotonic agents.magnified image
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