MeSH note : from fungus Cryptoporus volvatus; inhibitor of superoxide anion radical release; inhibits
tumor promotion of okadaic acid; RN given from Chem Abstr Index Guide 1991; RN given
refers to (1S-(1alpha(1S*,2R*),4alpha, beta,5beta(2R*,3S*(1R*,4aS*,5S*,8aR))8aalpha))-isomer;
RN for cpd without isomeric designation not avail 7/91;