New biosynthetically patterned inhibitors of gibberellin plant hormone formation
Abstract
ent-19-Hydroxy-7-norgibberella-5,16-diene (13) and the corresponding 19-aldehyde (14) and acid (12), have been prepared from the fungal metabolite, fujenal (8) and shown to act as inhibitors of gibberellic acid biosynthesis in Gibberella fujikuroi and to act as plant growth regulators when tested against rice seedlings.