Article révisé par les pairs
Résumé : Three previously unknown diterpenes - spirosphaerol (1), anthrasphaerol (2) and corfusphaeroxide (3) - have been isolated from the red alga Sphaerococcus coronopifolius. Their structures were elucidated by spectral analysis, including NMR and MS. The isolated metabolites were evaluated for their in vitro antitumour activities against one murine and five human cancer cell lines.