Catechin-7-''O''-glucoside is a flavan-3-ol glycoside formed from

catechin Catechin is a flavan-3-ol, a type of secondary metabolite providing antioxidant roles in plants. It belongs to the subgroup of polyphenols called flavonoids. The name of the catechin chemical family derives from ''catechu'', which is the tannic ...

Natural occurrences

Catechin-7-''O''-glucoside can be isolated from the hemolymph of the European pine sawfly ('' Neodiprion sertifer''). It also occurs in relatively large quantities in cowpea (''Vigna unguiculata'') as the dominant flavan-3-ol monomer, and actually accounts for up to 70% of cowpea proanthocyanidins (tannins). It can also be produced by biotransformation of (+)-

by cultured cells of '' Eucalyptus perriniana''.

Presence in natural traditional drugs

Catechin-7-''O''-glucoside can be found in ''paeoniae radix'', the crude drug made from the roots of Chinese peony ('' Paeonia lactiflora''), in red knotweed ('' Bistorta macrophylla'', also known as ''Polygonum macrophyllum''), in the stem barks of the Nepali hog plum (''

Choerospondias axillaris ''Choerospondias axillaris'', known in English as the Nepali hog plum, is a tree in the family Anacardiaceae. It is the sole species in genus ''Choerospondias''. It is native to the Himalayas, Indochina, southern and north-central China, Taiwan, a ...

''), in the Korean plum yew ('' Cephalotaxus koreana'') and in Huanarpo Macho ('' Jatropha macrantha''). (−)-Catechin 7-''O''-β-D-glucopyranoside is found in the bark of '' Rhaphiolepis umbellata''.

Presence in food

It is found in

buckwheat Buckwheat (''Fagopyrum esculentum'') or common buckwheat is a flowering plant in the knotweed family Polygonaceae cultivated for its grain-like seeds and as a cover crop. Buckwheat originated around the 6th millennium BCE in the region of what ...

groats, in the red bean (the seed of '' Vigna umbellata'', formerly known as ''Phaseolus calcaratus''),, in barley (''

Hordeum vulgare Barley (), a member of the grass family, is a major cereal grain grown in temperate climates globally. It was one of the first cultivated grains; it was domesticated in the Fertile Crescent around 9000 BC, giving it nonshattering spikelets ...

'' L.) and malt. (−)-Catechin 7-''O''-β-D-glucopyranoside is found in

rhubarb Rhubarb is the fleshy, edible stalks ( petioles) of species and hybrids (culinary rhubarb) of ''Rheum'' in the family Polygonaceae, which are cooked and used for food. The plant is a herbaceous perennial that grows from short, thick rhizomes. ...

Health effects

This compound has an antioxidant activity leading to a cytoprotective effect.

References

{{flavanol Flavanols Flavonoid glucosides