GC-FID-MS and X-ray Diffraction for the Detailed Evaluation of the Volatiles From Senecio filaginoides

Abstract

The medicinal aromatic plant Senecio filaginoides DC, which is very widespread in the Patagonia region, was harvested at the vegetative, flowering, and fructification stages. The materials were extracted by hydrodistillation, yielding in average 0.34% v/w of essential oils with a pleasant sweet and greenish scent. A total of 56 components were identified by gas chromatography using flame ionization detection and mass spectra measurements, representing 96.1%-97.6% of the total oil. The sesquiterpenoid 10 αH-furanoeremophil-1-one (1) appeared as a major constituent (16.2%-26.9%) of the oil. It could be isolated by cooling the oil at 4°C, thus yielding yellow crystalline solids. Its stereochemistry was assigned by single-crystal X-ray diffraction since previous studies identified the compound with different stereochemistries. The use of classical separation and analytical methodologies remains as a very useful strategy for the correct identification of compounds present in the volatile fraction of a plant and is a route for potential industrial applications.

Using DP4+ probability for structure elucidation of sesquiterpenic lactones: The case of (−)‐Istanbulin A

“…The assignation of the different peaks of the spectrum to the different atoms was made regarding integration, J ‐coupling, and spectroscopic data from related compounds. [ 20–22 ]…”

Essential oil from Senecio rudbeckiifolius Meyen & Walp.: Chemical analysis, antioxidant assessment, and literature review of Senecio essential oils

“…Previous works on the chemical composition of the essential oils from aerial parts of some Senecio species included S. acaulis 4 , S. glaucus [5][6][7] , S. ambavilla 8 , S. chysanthemides 9 , S. filaginoides [10][11][12] , S. graveolens 13 , S. aegyptus 14 , S. nutans [15][16][17][18] , S. squalidus 19 , S. farfalifolius 20 , S. longipenicillatus 21 , S. crassiflorus 22 , S. leucostachis 23 , S. rufinervis [24][25][26] , S. subulatus 27 , S. argophylloides 27 , S. viridis 18,27 , S. trapezuntinus 28 , S. vernalis [29][30][31] , S. viscous 31 , S. belgaumensis 32 , S. mutersii 33 , S. subpanduratus 33 , S. polyanthemoides 34 , S. pandurifolius 35 , S. giganteus 36 , S. selloi 37 , S. bombayensis 38 , S. flammeus 39 , S. laetus 40 , S. graciliflorus 41 , S. pogonias 42 , S. oreophyton 42 , S. nudicaulis [43][44][45] , S. vulgaris…”