A New and Practical Procedure for the Preparation of the Glucohexatose Phytoalexin Elicitor

Abstract The phytoalexin elicitor β‐(1→3)‐branched β‐(1→6)‐linked glucohexatose has been regio‐and stereospecifically synthesized by coupling of the 3, 6‐branched gluco‐trisaccharide Schmidt reagent 10 with a mixture of multiol) 3, 6‐branched gluco‐trisaccharides 13 which consists of free 5, 6′‐OH trisaccharide, free 5,2′, 6′‐OH trisaccharide, free 5,3′,6′‐OH trisaccharide and so on. The compounds 10 and 13 were prepared from 1,2:5,6‐di‐ O ‐isopropylidene‐α‐ D ‐glucofuranose, 2, 3, 4, 6‐tetra‐ O ‐ben‐zoyl‐α‐ D ‐glucopyranosyl trichloroacetimidate, and 2, 3, 4, 6‐tetra‐ O ‐acetyl‐α‐ D ‐glucopyranosyl trichloroacetimidate through regio‐and stereoselective manners.