Solieritide A, a new polyketide from the red alga sp.

A new polyketide, solieritide A (), along with six known ones (), had been isolated from the red alga sp. The structures of these compounds were elucidated by spectroscopic analysis. The absolute configuration of was determined by the method of X-ray diffraction. Compound was a rare polyketide bearing benzopyrone ring fused with γ-butyrolactone. Compounds were isolated from the red algae of genus for the first time. The antibacterial activities of were also discussed.