Abstract

The liverwort, Diplophyllum serrulatum afforded three new drimane-type sesquiterpenoids albicanic acid, albicanal and isoalbicanal, in addition to (+)-albicanol, (−)-drimenol, (+)-trans-γ-monocyclofarnesol, ent-spathulenol and anastreptene. Their structures were established by chemical and spectral means. Albicanol and albicanal were major constitutents of this species. This is the first report of the isolation of (−)-albicanic acid in nature and (+)-trans-γ-monocyclofarnesol from the liverworts.

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