Bioactive terpenoids from the Red Sea soft coral Sinularia polydactyla.,
Aboutabl, El-Sayed A., Azzam Shadia M., Michel Camilia G., Selim Nabil M., Hegazy Mohamed F., Ali Abdel-Hamid A. M., and Hussein Ahmed A.
, Natural product research, 2013, Volume 27, Issue 23, p.2224-6, (2013)
AbstractChemical investigation of an ethyl acetate soluble fraction of Sinularia polydactyla (Ehrenberg) led to the isolation of three known terpenoides, two of them sterols, 24-methylcholestane-3β,5α,6β,25-tetrol 25-monoacetate (1), 24-methylcholestane-5-en-3β,25-diol (2), in addition to a cembranoid diterpene, durumolide C (3), for the first time. The cytotoxicity and antimicrobial activities of the ethyl acetate extract and the isolated compounds 1-3 were evaluated in vitro. Durumolide C (3) showed selective cytotoxicity against HepG2 (IC50 1.0 μg/mL), whereas 24-methylcholestane-3β,5α,6β,25-tetrol 25-monoacetate (1) showed IC50 of 6.1 and 8.2 μg/mL against Hep2 and HCT human cancer cell lines, respectively.