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Halogenated secondary metabolites from Laurencia Obtusa

2003; Taylor & Francis; Volume: 18; Issue: 1 Linguagem: Inglês

10.1080/1057563031000122086

1478-6427

Zeynep Aydo gcaron mu scedil, Sedat İmre, Lale Ersoy, Victor Wray,

Chemical synthesis and alkaloids

A new sesquiterpene (1), and a halogenated C15 acetogenin (2), a stereoisomer of neoisoprelaurefucin were isolated from Laurencia obtusa. Four known compounds laurencienyne (3), rogiolenyne B (4), obtusenol (5), and (3E)-dactomelyne (6) were also isolated from this alga. Rogiolenyne B (4) and (3E)-dactomelyne (6) were found for the first from this species. The structures of these compounds were elucidated by spectroscopic methods. The unambiguous assignments of the 1H and 13C NMR spectral data of (5) and 13C NMR data of (6) were also reported for the first time.