Zingiberenol, (1R,4R,1'S)4-(1',5'-Dimethylhex-4'-enyl)-1-methylcyclohex-2-en-1-ol, identified as the sex pheromone produced by males of the rice stink bug Oebalus poecilus (heteroptera: pentatomidae).
J Agric Food Chem
; 61(32): 7777-85, 2013 Aug 14.
Article
em En
| MEDLINE
| ID: mdl-23879882
ABSTRACT
Bioassays using an olfactometer showed that Oebalus poecilus males produce the sexual pheromone, and the chemical analysis demonstrated that this compound is zingiberenol. Two groups of isomers, each containing four diastereoisomers, (1RS,4RS,1'S)- and (1RS,4RS,1'R)-zingiberenol, were prepared. These diastereoisomers were not separated on a chiral GC column. Therefore, to determine the absolute configuration of the carbon 1, 4, and 1' of zingiberenol produced by males, the following strategies were conducted. The extract containing males volatiles was submitted to dehydration microchemistry to produce zingiberene, in which the isomers are separated by chiral GC analysis, and by comparison with the natural zingiberene from ginger oil, the absolute stereochemistry of the carbons 4 and 1' was determined to be R and S, respectively, and the carbon 1 was determined as R from the (13)C NMR spectra of quercivorol. Finally, the bioassays showed that O. poecilus females responded to racemic mixture and to (1RS,4RS,1'S)-zingiberenol.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Oryza
/
Sesquiterpenos
/
Atrativos Sexuais
/
Heterópteros
Limite:
Animals
Idioma:
En
Revista:
J Agric Food Chem
Ano de publicação:
2013
Tipo de documento:
Article