Synthesis of 2-O-α-L-Rhamnopyranosyl-β-L-quinovopyranose

Preparation and Taste of Certain Glycosides of Flavanones and of Dihydrochalcones

“…7) NMR, UV, and [iX]o data were measured with the same equipment as that described in the previous paper.7) Elemental analyses were performed by the Microanalytical Laboratory of the School of Pharmaceutical Sciences at this university. (5). Naringenin (6.6 g) and 17 (17 g) were dissolved in anhyd.…”

“…Accordingly, it was assumed that the sugar components were introduced to the 4' or 3' hydroxyl groups of flavanone. The anomeric configuration of the glycopyranosidic bond directly attached to the hydroxyl groups of the aglycones in [5][6][7][8][9][10][11][12][13][14][15][16] was determined by applying the Klyne rule 12 ) as shown in the experimental section.…”