Spirocyclopropane-type sesquiterpene hydrocarbons from Schinus terebinthifolius Raddi |
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Authors: | Rita Richter Stephan H von Reuß Wilfried A König |
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Institution: | 1. Oevelgoenner Str. 7, D-20257 Hamburg, Germany;2. Institut für Organische Chemie, Universität Hamburg, D-20146 Hamburg, Germany |
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Abstract: | The essential oil of Schinus terebinthifolius fruits was reinvestigated using GC and GC–MS techniques. Apart from several known compounds three sesquiterpene hydrocarbons with a carbon skeleton exhibiting the rare spiro(cyclopropane) moiety could be isolated by a combination of column chromatography and GLC. Structure assignments were carried out by NMR spectroscopy. These natural products are 9-spiro(cyclopropa)-4,4,8-trimethyl-2-methylenbicyclo4.3.0]non-1(6)-ene (terebanene), 9-spiro(cyclopropa)-2,4,4,8-tetramethylbicyclo4.3.0]nona-1,5-diene (teredenene), and (6R1,8R1)-9-spiro(cyclopropa)-2,4,4,8-tetramethylbicyclo4.3.0]non-1-ene (terebinthene). |
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