Seasonal Variation and Resin Composition in the Andean Tree Austrocedrus chilensis
| Autor: | Guillermo Schmeda-Hirschmann, Verónica Rachel Olate, Alex Soto |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2014 |
| Předmět: |
Magnetic Resonance Spectroscopy
Cupressaceae Austrocedrus chilensis principal component analysis Pharmaceutical Science seasonal composition Gas Chromatography-Mass Spectrometry Article Analytical Chemistry lcsh:QD241-441 chemistry.chemical_compound lcsh:Organic chemistry Drug Discovery Botany medicine Chile Physical and Theoretical Chemistry Chemical composition biology Organic Chemistry diterpenes Seasonality biology.organism_classification medicine.disease Ferruginol chemistry Chemistry (miscellaneous) Multivariate Analysis Molecular Medicine resin Sandaracopimaric acid Composition (visual arts) Seasons Diterpene Austrocedrus Resins Plant |
| Zdroj: | Molecules Volume 19 Issue 5 Pages 6489-6503 Molecules, Vol 19, Iss 5, Pp 6489-6503 (2014) |
| ISSN: | 1420-3049 |
| DOI: | 10.3390/molecules19056489 |
| Popis: | Little is known about the changes in resin composition in South American gymnosperms associated with the different seasons of the year. The diterpene composition of 44 resin samples from seven Austrocedrus chilensis (Cupressaceae) trees, including male and female individuals, was investigated in three different seasons of the year (February, June and November). Twelve main diterpenes were isolated by chromatographic means and identified by gas chromatography-mass spectrometry and nuclear magnetic resonance (NMR). The diterpene composition was submitted to multivariate analysis to find possible associations between chemical composition and season of the year. The principal component analysis showed a clear relation between diterpene composition and season. The most characteristic compounds in resins collected in summer were Z-communic acid (9) and 12-oxo-labda-8(17),13E-dien-19 oic acid methyl ester (10) for male trees and 8(17),12,14-labdatriene (7) for female trees. For the winter samples, a clear correlation of female trees with torulosic acid (6) was observed. In spring, E-communic acid (8) and Z-communic acid (9) were correlated with female trees and 18-hydroxy isopimar-15-ene (1) with male tree resin. A comparison between percent diterpene composition and collection time showed p < 0.05 for isopimara-8(9),15-diene (2), sandaracopimaric acid (4), compound (7) and ferruginol (11). |
| Databáze: | OpenAIRE |
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