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 The bond between the aglycone and the saccharide may be
established through any of the phenolic hydroxyl groups on
the aglycone, but as a general rule, the hydroxyl groups in the
7-position of the flavones and in the 3-position of the

flavonols are most often involved structures, in which a
hydroxyl group of the sugar moiety is esterified by an aliphatic
acid (acetic, malonic, and others) or an aromatic acid (gallic,

benzoic, 4-coumaric, and other cinnamic derivatives).
 In C-Glycosylflavonoids the bond is established between the
asymmetric carbon on the sugar (often glucose, also galactose

or a pentose) and the C-6 or C-8 of the aglycone. Here the
aglycone is a flavonoid. This is a large group of flavonoid
glycosides.

 Examples include:
 Hesperidin (aglycone: Hesperetin, glycone: Rutinose)
 Naringin (aglycone: Naringenin, glycone: Rutinose)

 Rutin (aglycone: Quercetin, glycone: Rutinose)
 Quercitrin (aglycone: Quercetin, glycone: Rhamnose)

Characters of flavonoid glycosides