CARBOHYDRATE COMPONENTS OF FLAVONOL TRIAOSIDES: A CONVENIENT SYNTHESIS OF O-α-L-RHAMNOPYRANOSYL-(1->3)-O-α-L-RHAMNOPYRANOSYL-(1->6)-D-GALACTOSE AND-O-α-RHAMNOPYRANOSYL-(1->6)-D-GALACTOSE

Article abstract of DOI:10.1016/S0008-6215(00)80751-X

Condensation of 1,2:3,4-di-O-isopropylidene-α-D-galactopyranose (1) with 2,4-di-O-acetyl-3-O-(2,3,4-tri-O-acetyl-α-L-rhamnopyranosyl)-α-L-rhamnopyranosyl bromide (2), followed by subsequent removal of the isopropylidene and acetyl groups from the product,