Add time:09/07/2019         Source:sciencedirect.com

A divergent synthesis of the two novel polyhydroxylated azepanes (2R,3R,4R,5R,6R)-2-(hydroxymethyl)azepane-3,4,5,6-tetraol and (2R,3R,4R,5R,6S)-2-(hydroxymethyl)azepane-3,4,5,6-tetraol from d-mannose is described. The method involves a Henry reaction between dimethyl-tert-butylsilyl 2,3-O-isopropylidene-α-d-lyxo-pentodialdo-1,4-furanoside and 2-nitroethanol followed by a reductive ring closure of the resulting epimeric nitro aldols. Glycosidase inhibition tests showed that (2R,3R,4R,5R,6S)-2-(hydroxymethyl)azepane-3,4,5,6-tetraol exhibits a weak but selective inhibition against α-l-fucosides.

We also recommend Trading Suppliers and Manufacturers of (3R)-2,3-Dihydro-6-hydroxy-3-(hydroxymethyl)-2-methyl-10H-3α,10aα-epidithiopyrazino[1,2-a]indole-1,4-dione (cas 1668-07-1). Pls Click Website Link as below: cas 1668-07-1 suppliers