A new acylated flavonoid tetraglycoside with anti-inflammatory activity from Tipuana tipu leaves.

A new acylated kaempferol glycoside, kaempferol 3-O-α-l-rhamnopyranosyl-(1 â†’ 6)-O-[ß-d-glucopyranosyl-(1 â†’ 2)-4-O-acetyl-α-l-rhamnopyranosyl-(1 â†’ 2)]-ß-d-galactopyranoside, has been isolated from the leaves of Tipuana tipu (Benth.) Lillo growing in Egypt, along with three known flavonol glycosides, kaempferol 3-O-rutinoside, quercetin 3-O-rutinoside (rutin) and kaempferol 3-O-[α-l-rhamnopyranosyl-(1 â†’ 6)]-[α-l-rhamnopyranosyl-(1 â†’ 2]-ß-d-glucopyranoside. Structure elucidation was achieved through different spectroscopic methods. Structure relationship with anti-inflammatory activity using carrageenin-induced rat paw oedema model is discussed.