Chalcone Glycosides

2.4.4 Chalcone Glycosides

Chalcones are characterised usually by the presence of the following essential structure:

Ar(A) —CO—CH = CH—Ar(B)

Evidently, the two aromatic rings (A and B) are linked by the three carbon -aliphatic chain which does not actively take part in the formation of a hetero-ring as is normally found in other types of flavonoid compounds. Likewise, the dihyrochalones shall have the following general structure:

Ar(A) —CO—CH₂—CH₂—Ar(B)

Also, the chalone yields a flavanone on treating with 10% H₂SO₄. These two reactions may be represented as follows:

Interestingly, the chalones and flavanones are closely related to each other and they are also fully interconvertible.

Examples:

Source: Pharmacognosy And Pharmacobiotechnology By Ashutosh Kar