Synonym: (2′S,3′S,3aR,5′R,6aS,9R,9aS,10aR)-1,3a,4,4′,5′,6a,7,8,9,9a,10,10a-Dodecahydro-9-hydroxy-3′,9,10a-trimethyl-5′-spiro[dicyclopenta[a,d]cyclooctene-3(2H),2′(3′H)-furan]-6-carboxaldehyde
CAS Number: 4611-05-6
Empirical Formula (Hill Notation): C25H36O4
Molecular Weight: 400.55
Ophiobolin A is a fungal metabolite, toxic to many crops and found to have antimicrobial and anticancer activity. Ophiobolin A is a calmodulin antagonist and inhibitor of big conductance Ca2+-activated K+ channel (BKCa) activity. Its anticancer activity may involve inhibition of multiple oncogenic signaling pathways including PI3K/mTOR, Ras/Raf/ERK and CDK/RB. One study suggested the possibility of pyrrolylation of lysine residues on its intracellular target protein(s) as a mechanism of action on various targets.