Quarterly Journal of the Chemical Society of London, Volume 9, Pages 1041-2128

absorption acetic acid acetic anhydride acetone acetyl added alcohol alumina Amer amine anhydride aqueous aromatic ation benzene boiling bromide Calc carbonate carbonyl CH₂ Chem chloride chloroform chromatographed cm.¹ compound cooled crystallised cyclisation D.Sc decomp derivative diluted dimethyl dimethylformamide dioxan dissolved distilled doublet dried Elution ester ethanol ethyl acetate evaporated extracted with ether filtered filtrate Found fraction gave gibberellin give heated under reflux hydrazine hydrochloric acid hydrogen hydrolysis hydroxide i.r. spectrum iodide irradiation isolated ketone lithium aluminium hydride m.p. and mixed methyl ester methylene mixed m.p. mmoles mole n.m.r. spectrum needles obtained oxide petroleum phenyl potassium precipitate prepared protons pyridine reaction mixture reduced pressure requires residue ring room temperature salt silica gel singlet sodium sodium hydroxide solid solution solvent spectra stirred sulphoxide sulphur tetrahydrofuran triethylamine VIII washed yellow yield