The wood of Dysoxylum schiffneri (Meliaceae) has yielded the known (+)
-8-hydroxycalamenene, the novel sesquiterpenoid, schiffnerone A (1,5-d
ihydroxy-1,3,5-bisabolatrien-10-one) and the novel trisnorsesquiterpen
oid, schiffnerone B (2-hydroxy-11,12,13-trinor-7-calamenone). (C) 1998
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