Two new sesquiterpenoids, polydactins A (1) and B (2) and a known sesquiterpene, 10alpha-hydroxycadin-4-en-15-al (3), were isolated from the soft coral Sinularia polydactyla (Ehreberg). Their structures were determined mainly by spectroscopic methods. Polydactin A (1) showed moderate cytotoxic activities against human oral epidermoid carcinoma cell lines (KB) and human breast carcinoma (MCF) tumour cell lines (in vitro).
A new compound, serratin, was isolated from the essential oil of Clerodendron serratum along with lupeol. The structure of the compound has been elucidated on the basis of chemical analysis and spectroscopic methods including IR, MS, and NMR techniques.
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