Hispidin is a natural substance. It can also be synthesized.
Hispidin 4-O-β-D-glucopyranoside can be found in Pteris ensiformis whereas hispidin derivatives, such as phellibaumins, can be found in the edible mushroom Inonotus xeranticus or Phellinus. Hispidin is a precursor of fungalluciferin, a compound responsible for light emission by luminous mushrooms.
↑Gonindard, C.; Bergonz i, C.; Denier, C.; Sergheraert, C.; Klaebe, A.; Chavant, L.; Hollande, E. (1997). "Synthetic hispidin, a PKC inhibitor, is more cytotoxic toward cancer cells than normal cells in vitro". Cell Biology and Toxicology. 13 (3): 141–53. doi:10.1023/A:1007321227010. PMID9088624. S2CID755744.
↑Lee, In-Kyoung; Seok, Soon-Ja; Kim, Wan-Kyu; Yun, Bong-Sik (2006). "Hispidin Derivatives from the Mushroom Inonotusxeranticusand Their Antioxidant Activity". Journal of Natural Products. 69 (2): 299–301. doi:10.1021/np050453n. PMID16499338.
↑Lee, In-Kyoung; Yun, Bong-Sik (2007). "Highly oxygenated and unsaturated metabolites providing a diversity of hispidin class antioxidants in the medicinal mushrooms Inonotus and Phellinus". Bioorganic & Medicinal Chemistry. 15 (10): 3309–14. doi:10.1016/j.bmc.2007.03.039. PMID17387019.