Prenylphenols from the skin of the aeolid mollusc Cratena peregrina

Two prenylchromanols (1 and 2) and a prenyl-p-hydroxy acid (3) have been isolated from the nudibranch Cratena peregrina. Compound 2 is new, while 1 and 3 have been previously found in marine organisms, even though they were only partially characterised. 1H and 13C NMR spectra of all metabolites have been fully assigned.