The bioactive compound from the Indonesian Marine SpongeCallyspongia sp.isolated based on bioassay-guided separation with several steps of chromatography has been done. There are 4 major compound known as isocopalane diterpene derivatives together with a plausible new compound, isocopalanol, a polyoxygenated isocopalane diterpene. Isocopalanol has molecular weight [M+H]+ 412.576 m/z indicate that the compound has molecular formula C24H44O5 determined by LCMS-ESI. This compound has bioactivity IC50 = 0.1 μg / mL against human pancreatic cancer cell.
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Kurnianda et al. (2019) studied this question.
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