Biotransformation of 7α-hydroxy- and 7-oxo-ent-atis-16-ene derivatives by the fungus Gibberella fujikuroi

The microbiological transformations of 7α,19-dihydroxy-ent-atis-16-ene (1) and 7-oxo-ent-atis-16-en-19-oic acid (3) by the fungus Gibberella fujikuroi have been studied.