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A facile total synthetic route to (±)-nimbonone and (±)-12-ethyl-13-methoxy- 8,11,13-podocarpatriene was developed. The Wittig reaction of cyclocitral with (3-methoxy- benzyl) triphenylphosphonium and intramolecular cyclization with BF3Et2O in the synthetic progress were applied. In order to induce the ethyl substituent, Fiedel-Crafts acetylation and then decarbonylation had been employed.
The factig reaction of cyclocitral with (3-methoxy-benzyl) triphenylphosphonium and intramolecular cyclization with BF3Et2O in the synthetic progress were applied. In order to induce the ethyl substituent, Fiedel-Crafts acetylation and then decarbonylation had been employed.