A highly enantioselective and straightforward route to trisaccharide natural products digoxose and digitoxin has been developed. Key to this approach is the iterative application of the palladium-catalyzed glycosylation reaction, reductive 1, 3-transposition, diastereoselective dihydroxylation, and regioselective protection. The first total synthesis of natural product digoxose was accomplished in 19 total steps from achiral 2-acylfuran, and ...
![digitoxigen O-[2',6'-dideoxy-β-D-ribo-hexopyranosyl]-(1->4)-(3-O-acetyl-2,6-dideoxy-β-D-ribo-hexopyranoside) Structure](https://image.chemsrc.com/caspic/182/30788-61-5.png)
![(3beta,5beta,8xi,9xi)-3-{[2,6-dideoxy-4-O-(2,6-dideoxy-beta-D-ribo-hexopyranosyl)-beta-D-ribo-hexopyranosyl]oxy}-14-hydroxycard-20(22)-enolide Structure](https://image.chemsrc.com/caspic/314/16479-50-8.png)