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2-p- Anisyl-4 - methoxy- 5 -hydroxybenzofuran was opthesized via intramolecul ar Wittigreaction betueen the phosphoniurn salt and the ester in the presence of triethylaJnine. Its 1H-NMRwas very similar to that of Gnetifolin A. Thus the revised structure of Gnetifolin A can beconsidered to be strongly confirmed.
2-p-Anisyl-4-methoxy- 5 -hydroxybenzofuran was opthesized via intramolecul ar Wittigreaction betueen the phosphoniurn salt and the ester in the presence of triethylammonium. Its 1H-NMR was very similar to that of Gnetifolin A. Thus the revised structure of Gnetifolin A can be able to be be confirmed