Broussonol E is a diprenylated flavonol. Broussonol E can be isolated from the leaves of Broussonetia kazinoki. Unlike some dinonylated flavonol derivatives, Broussonol E has no cytotoxicity to human tumor cell lines (A549, HCT-8, KB)[1].
ChEBI: Papyriflavonol A is a pentahydroxyflavone that is flavone substituted with hydroxy groups at positions 3, 5, 7, 3' and 4' and prenyl groups at positions 6 and 5'. Isolated from Broussonetia papyrifera, it exhibits inhibitory activity against phospholipase A2 and tyrosinase. It has a role as a metabolite, an EC 3.1.1.4 (phospholipase A2) inhibitor and an EC 1.14.18.1 (tyrosinase) inhibitor. It is a member of flavonols, a pentahydroxyflavone and a 3'-hydroxyflavonoid.