title: Different stereoselectivity in the reduction of pulegone by Mentha species.
abstract: Aqueous solutions of [2H]-labeled pulegone enantiomers were fed to Mentha spicata ssp. spicata L. and Mentha spicata ssp. crispata L. shoot tip and first leaf pair. After solid phase microextraction the essential oil was analysed with enantioselective multidimensional gas chromatography/mass spectrometry. Both Mentha spicata species were able to convert labelled (1R)- and (1S)-pulegone at the same rate into the corresponding menthone and isomenthone, indicating an unspecific process. The reduction of both pulegone enantiomers preferably led to the cis-stereoisomers. The observed stereoselectivity is completely different from those of pulegone reduction by Mentha x piperita L.
authors.affiliation: Institut für Lebensmittelchemie, Johann Wolfgang Goethe-Universität Frankfurt/M., Germany.
authors.forename: S
authors.initials: S
authors.lastname: Fuchs
authors.forename: T
authors.initials: T
authors.lastname: Beck
authors.forename: A
authors.initials: A
authors.lastname: Mosandl
mesh_terms: D000081005:Cyclohexane Monoterpenes; D003903:Deuterium; D008401:Gas Chromatography-Mass Spectrometry; D007553:Isotope Labeling; D019686:Lamiaceae / Q000378:metabolism*; D008610:Menthol / Q000031:analogs & derivatives / Q000737:chemistry / Q000378:metabolism*; D039821:Monoterpenes; D018515:Plant Leaves / Q000378:metabolism; D018520:Plant Shoots / Q000378:metabolism; D013237:Stereoisomerism; D013729:Terpenes / Q000737:chemistry / Q000378:metabolism
chemical_list: D000081005:Cyclohexane Monoterpenes; D039821:Monoterpenes; D013729:Terpenes; D008610:Menthol; C039648:pulegone; C019466:menthone; D003903:Deuterium