Constituents of Brazilian Vassoura oil

✍ Scribed by Peter Weyerstahl; Christian Christiansen; Helga Marschall

• Publisher: John Wiley and Sons
• Year: 1996
• Tongue: English
• Weight: 489 KB
• Volume: 11
• Category: Article
• ISSN: 0882-5734
• DOI: 10.1002/(sici)1099-1026(199601)11:1<15::aid-ffj541>3.0.co;2-h

✦ Synopsis

More than 100 constituents of the commercial topped Brazilian Vassoura oil (ex Baccharis dracunculifolia DC.) were identified by GC-MS and 'H-NMR spectra. The oil is composed of c. 19% of monoterpene hydrocarbons. c. 2% of oxygenated monoterpenes, c. 38% of sesquiterpene hydrocarbons, and c. 35% of oxygenated sesquiterpenes (15% nerolidol). The trace constituents (E)and (Z)-4,8-dimethylnona-3,7-dien-2-one, the vitispiranes, the theaspiranes, $-damascone, $-damascenone, the cabreuva oxides, p-ionone, and some 3-phenyl propanoates are olfactorily valuable. KEY WORDS Vassoura oil; Baccharis dracunculifolia DC.; Compositae; mono-and sesquiterpenes; 4,8-dimethylnona-3,7-dien-2-one; vitispirane; theaspirane; f3-damascone; cabreuva oxides 'Vassoura oil is commercially available from Dieberger Oleos Essencias SA, Sao Paolo, Brazil. 'H-NMR (CDCQ: Bruker AM 400. 13C-NMR (CDC13): Bruker AH 270 with DEFT programme. CCC 0882-5734/96/01OO15 -09 @ 19% by John Wiley & Sons. Ltd.