Feroniellic acids A–C, three new isomeric furanocoumarins with highly hydroxylated geranyl derived moieties from Feroniella lucida

Three new isomeric furanocoumarins named feroniellic acids A–C (1–3) were isolated from the BuOH extract of Feroniella lucida roots. They are diastereomerically different to each other in configuration at C-2″ and C-3″. The structures were elucidated on the basis of spectroscopic data while their configurations were established by synthesis of model compounds together with application of Mosher’s method.