An unusual halogenated meroditerpenoid from Stypopodium flabelliforme: Studies by NMR spectroscopic and computational methods

Meroditerpenoids (2 and 7) were isolated along with eight known compounds from the brown alga Stypopodium flabelliforme. Their structures were elucidated by spectroscopic analysis. In addition, GIAO/DFT analysis was carried out to support the structure of 7.