Metabolites of the higher fungi. Part 25. Punctaporonin G from the fungus Poronia punctata(linnaeus: Fries) Fries
Abstract
Punctaporonin G is a new naturally occurring tricyclic sesquiterpene; it can also be produced from punctaporonin B by acid catalysed dehydration involving the 1- and 4-hydroxy substituents. The properties of punctaporonin G are compared with those of B and an additional major acid degradation product of B is identified.