Synthesis of β‐(1 → 6)‐Branched (1 → 3)‐Glucononaoside with Alternate β‐and α‐Bonds in the Backbone

Abstract

AbstractLauryl glycoside of β‐D‐Gicp‐(1 → 3)‐[β‐D‐Glcp‐(1 → 6)‐] a‐D‐Glcp‐(1 → 3)‐β‐D‐Glcp‐(1 → 3)‐[β‐D‐Glcp‐(1 → 6)‐] a‐D‐Glcp‐(1 → 3)‐β‐D‐Glcp‐(1 → 3)‐[β‐D‐Glcp‐(1 → 6)‐]β‐D‐Glcp was synthesized through 3 + 3 + 3 strategy. 3‐O‐Allyl‐2, 4, 6‐tri‐O‐benzoyl‐β‐D‐glucopyranosyl‐(1 → 3)‐[2, 3, 4, 6‐tetra‐O‐benzoyl‐β‐D‐glucopyranosyl‐(1 → 6)‐] 1, 2‐O‐isopropylidene‐a‐D‐glucofuranose was used as the key intermediate which was converted to the corresponding trisaccharide donor and acceptor readily.