Avenanthramide B is a monohydroxybenzoic acid resulting from the formal condensation of the carboxy group of ferulic acid with the amino group of 2-amino-5-hydroxybenzoic acid. It is an oat phytoalexin produced in response to pathogen attack and elicitation. It has a role as a phytoalexin, an antineoplastic agent and an apoptosis inducer. It is a secondary carboxamide, a member of cinnamamides, a monomethoxybenzene, a monohydroxybenzoic acid, a member of phenols and an amidobenzoic acid.

Silychristin is a flavonolignan isolated from Silybum marianum and has been shown to exhibit inhibitory activities against lipoxygenase and prostaglandin synthetase. It has a role as a metabolite, a lipoxygenase inhibitor, a radical scavenger and a prostaglandin antagonist. It is a secondary alpha-hydroxy ketone, a polyphenol, an aromatic ether, a member of 1-benzofurans and a flavonolignan. Silychristin is a plant growth regulator, is an anti-hepatotoxic agent, is also an inhibitor of horseradish peroxidases and lipoxygenase.