Inhibitors of the biosynthesis of gibberellins. Part 1. 7-Fluoro-10β-fluoromethyl-1β,8-dimethylgibbane-1α,4aα-carbolactone
Abstract
The title compound (1) has been prepared from gibberellic acid; its addition to a fermentation of G. fujikuroi led to the accumulation of ent-kaurene, and hence suggested that it inhibited the biosynthetic oxidation of kaurene. Compound (1) also retards the conversion of gibberellin A12 aldehyde (25) into gibberellins A12(26) and A43(21) by a plant enzyme system.