FRIEDELIN

Friedelin is a flavonoid extract which displays radical scavenging and anti-typhoid activity.

Friedelin can be used as a starting material in the synthesis of:

• Friedel-3-enol acetate, friedel-2-oxo-3-enol acetate, friedel-2-ene derivatives and friedelin ketoxime.
• Oxygenated friedelin derivatives as potent DNA topoisomerase IIα inhibitors.
• Its 1,4-pyrazine derivatives as potent antimicrobial agents.

ChEBI: Friedelin is a pentacyclic triterpenoid that is perhydropicene which is substituted by an oxo group at position 3 and by methyl groups at the 4, 4a, 6b, 8a, 11, 11, 12b, and 14a-positions (the 4R,4aS,6aS,6bR,8aR,12aR,12bS,14aS,14bS-enantiomer). It is the major triterpenoid constituent of cork. It has a role as an anti-inflammatory drug, a non-narcotic analgesic, an antipyretic and a plant metabolite. It is a pentacyclic triterpenoid and a cyclic terpene ketone.

Friedelin, a pentacyclic triterpene, is found in several plants like Cissus quadrangularis, Celastrus vulcanicola, Terminalia?avicennioides, and Alangium salvifolium. It is known to act as a histamine H1 receptor?(H1R) antagonist, anti-microbial, anti-HIV, and anti-cancer agent.