Drimane-type sesquiterpenoids from the liverwort Diplophyllum serrulatum
1994
Toyota, M. | Ooiso, Y. | Kusuyama, T. | Asakawa, Y.
The liverwort, Diplophyllum serrulatum afforded three new drimane-type sesquiterpenoids albicanic acid, albicanal and isoalbicanal, in addition to (+)-albicanol, (-)-drimenol, (+)-trans-gama-monocyclofarnesol, ent-spathulenol and anastreptene. Their structures were established by chemical and spectral means. Albicanol and albicanal were major constituents of this species. This is the first report of the isolation of (-)-albicanic acid in nature and (+)-trans-gama-monocyclofarnesol from the liverworts.
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