Fortunoids A–C, Three Sesquiterpenoid Dimers with Different Carbon Skeletons from Chloranthus fortunei

Three dimeric sesquiterpenoids (1–3), fortunoid A (1) possessing a new carbon skeleton of rearranged lindenane dimer and fortunoids B (2) and C (3) representing the first example of the dimers of a lindenane and a eudesmane sesquiterpene, were isolated from Chloranthus fortunei. Their structures with absolute configurations were established by spectroscopic data and electric circular dichroism analysis. Their biosynthetic origins were also proposed. Compounds 1 and 2 showed moderate antimalarial activities.