A new sesquiterpeniod, 6alpha, 7alpha, 10alpha-trihydroxyisoducane (1), together with two known sesquiterpenoids, oplodiol (2) and oplopanone (3), were isolated from the chloroform extract of the rhizomes of Homalomena occulta. Their structures were elucidated by 1D and 2D NMR spectral
Chemical investigation of rhizomes of Homalomena occulta (Lours) resulted in isolation and identification of two sesquiterpenoids (6,7), and one daucane ester 8, together with five known sesquiterpenoids, oplodiol, oplopanone, homalomenol C, bullatantriol, and 1beta,4beta,7alpha-trihydroxyeudesmane.