Page 204 - Phytochemistry 2 (06-PG 605)

B- Flavanolignans

Silymarin
It is obtained from the fruits of Milk thistle,Silybum marianum
Family Compositae .
It is commercially available as standardized mixture of related and
isomeric compounds(silybin, silandrin, silydianin, silychristin, 3-
deoxysilychristin, and silymonin)

HO O O CH2OH
O OCH3

OH OH

OH O Silybin