Herticins A (¼ (8aH)-10b-hydroxyeremophilenolide; 1) and B (¼ (8aH)-6a,10b-dihydroxyeremophilenolide; 2), two new sesquiterpenes, have been isolated from the AcOEt-soluble fraction of the MeOH extract of Hertia intermedia (whole plant). Their structures were assigned from 1 H-and 13 C-NMR spectra (DEPT) and 2D-NMR analyses (COSY, NOESY, and HMBC experiments) in combination with HR-MS experiments and comparison with literature data of related compounds.
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