Page 62 - Pharmd general phytochemistry I-Final2024_LEUCTERS

 Band at lower wavelength (band II) which is due to the benzoyl fraction
of the flavonoidal structure.
Benzoyl fraction Cinnamoyl fraction

O

Absorbance O

Band Band I

250 350

Wavelength (nm)

 1- Flavone glycosides

Diosmin

Source: buchu leaves.

{Rhamnose –glucose} = (Rutinose)
Diosmin Hydrolysis
Diosmetin + Glucose +Rhamnose
(Genin)

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