Microbiological transformation of two 15α-hydroxy-ent-kaur-9(11),16-diene derivatives by the fungus Fusarium fujikuroi

► Biotransformation of ent-kaur-9(11),16-diene derivatives by Fusarium fujikuroi. ► Inhibition of the biosynthesis of gibberellins and seco-ring B ent-kaurenoids. ► Decarboxylation of a 19-CO2H in presence of a 6β-hydroxy group in ent-kaurenes. ► On the incubation of grandiflorenic acid with Fusarium fujikuroi.