CHAMIGRANE METABOLITES FROM A JAMAICAN VARIETY OF LAURENCIA OBTUSA

Article abstract of DOI:10.1016/S0031-9422(00)82349-3

Two new sesquiterpenoid metabolites have been characterized form a Jamaican variety of the marine alga Laurencia obtusa.These are 2-chloro-3-hydroxy-α-chamigren-9-one, with an unusual cis-relationship of the heteroatoms at the 2,3-positions, and its intramolecular conjugate addition derivative possessing a cineole moiety fused to a cyclohexane ring. - Key Word Index: Laurencia obtusa; Rhodomelaceae; marine algae; sesquiterpenes; halochamigrenes.