| bioactive bromophycolides r-u from the fijian red alga callophycus serratus. | four new bromophycolides, r-u (1-4), were isolated from the fijian red alga callophycus serratus and were identified by 1d and 2d nmr and mass spectroscopic analyses. these compounds expand the known structural variety of diterpene-benzoate macrolides and exhibited modest cytotoxicity toward selected human cancer cell lines. bromophycolide s (2) also showed submicromolar activity against the human malaria parasite plasmodium falciparum. | 2010 | 20141173 |