THE STRUCTURES OF (3Z)-EPOXYVENUSTIN, (3Z)-VENUSTIN, AND (3Z)-VENUSTINENE, NEW HALOGENATED C15-NONTERPENOIDS FROM THE RED ALGALAURENCIA VENUSTAYAMADA
摘要:
Three new halogenated nonterpenoid C15-compounds have been isolated from the red alga Laurencia venusta Yamada. The structure of (3Z)-epoxyvenustin was confirmed by X-ray diffraction analysis. The structures of (3Z)-venustinene containing a novel propyl side chain and (3Z)-venustin were deduced from their spectral evidence.