Two new briarane diterpenoids briareolate esters J ( 1) and K ( 2) were isolated from the methanolic extract of the octocoral Briareum asbestinum collected off the coast of Boca Raton, Florida. The structures of briaranes 1 and 2 were elucidated by interpretation of spectroscopic data. Briareolate ester K ( 2) showed weak growth inhibition activity against human embryonic stem cells (BG02).
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