Plocamenone, a unique halogenated monoterpene from the red alga, plocamium

✍ Scribed by Donald B. Stierle; James J. Sims

• Book ID: 104229918
• Publisher: Elsevier Science
• Year: 1984
• Tongue: French
• Weight: 169 KB
• Volume: 25
• Category: Article
• ISSN: 0040-4039
• DOI: 10.1016/s0040-4039(00)99827-7

✦ Synopsis

Chemistry

The unique halogenated monoterpene, 7-bromo-2,6-dimethyl-4,4,8-trichloro-l,5(z)-octadiene-3-one, was isolated from the marine red alga Plocamium. Polyhalogenated monoterpenes have been reported from several species of the genus Plocamium'y2. __-Our examination of a Plocamium species , collected off the coast of New South Wales, Australia, has revealed a new polyhalogenated monoterpene ketone, 1. Ketone 1 was iso-lated as the major constituent from the alga by extraction with hexane followed by silica gel chromatography. Ketone 1 [a], = -17.3 (CHCl,), (1.6% dry weight) was shown to have the formula C,,H,,BrCl,O by high resolution mass spectrometry.