Rare sesquiterpenes from South African Pteronia species |
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Authors: | A.M. Viljoen,G.P.P. Kamatou,Z.H. Coovadia,T. Ö zek,K.H.C. Başer |
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Affiliation: | 1. Department of Pharmaceutical Sciences, Faculty of Science, Tshwane University of Technology, Private Bag X680, Pretoria 0001, South Africa;2. Department of Pharmacy and Pharmacology, Faculty of Health Sciences, University of the Witwatersrand, 7 York Road, Parktown 2193, South Africa;3. Department of Pharmacognosy, Faculty of Pharmacy, Anadolu University, 26470-Eski?ehir, Turkey |
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Abstract: | The genus Pteronia consists of approximately 80 species which are widely distributed in southern Africa. The essential oils isolated from the aerial parts of eleven species, analyzed by GC-MS varied both qualitatively and quantitatively. In Pteronia pallens, Pteronia empetrifolia and Pteronia flexicaulis uncommon sesquiterpenes such as presilphiperfolol-7-ene, 7-α-(H)-silphiperfol-5-ene, 7-β-(H)-silphiperfol-5-ene, α-campholene aldehyde, silphiperfol-5-ene, cameroonan-7-α-ol, silphiperfol-7-β-ol, presilphiperfolan-9-α-ol and presilphiperfolan-8-ol (a major compound in P. pallens) were identified. Cluster analysis based of the chemical composition of the oils revealed that individual plants of Pteronia camphorata collected in the same population had similar oil profiles with a high correlation coefficient (Scorr ≈ 0.98). Similarly, the essential oil composition of P. pallens collected from two distinct localities also showed high levels of congruency (Scorr ≈ 0.99). |
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Keywords: | 7-α-(H)-silphiperfol-5-ene 7-β-(H)-Silphiperfol-5-ene Essential oil Presilphiperfolan-8-ol Presilphiperfolan-9-α-ol Presilphiperfolol-7-ene Pteronia GC-MS Silphiperfol-5-ene Silphiperfol-7-β-ol α-Campholene aldehyde |
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