Abstract
A new norsesquiterpenoid, (4aS,5S)-5,6,7,8-tetrahydro-3-hydroxy-4a,5-dimethylnaphthalen-2(4aH)-one, along with three known compounds were isolated from the roots of Ligularia fischeri. Their structures were identified by IR, EI-MS, HR-ESI-MS, 1D NMR and 2D NMR.
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