“…From the experience of searching bioactive metabolites from soft corals, series of cembranoids have been unveiled from octocorals (Alcyonaceae) belonging to the genera Sarcophyton , [1,2,3,4,5,6,7,8,16], Sinularia [9,10,11,12,17,18] and Lobophyton [13,14,15]. Also, previous studies showed that two cembranoid units could form biscembranoid-type compounds by Diels-Alder reaction [19,20,21], radical dimerization [22,23], or connection with a sulfur atom [18], making the chemistry of cembranes more complex and interesting than monomeric form.…”