A new sesquiterpenoid, junceol A(l), as well as two known diterpenoids, scl
erophytin A (2) and cladiellisin (3), have been isolated from the sea pen o
ctocoral Virgularia juncea. The structure of metabolite I was determined by
extensive spectral analysis. Compounds 1-3 have been shown to exhibit cyto
toxicity toward P-388 cancer cells.