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Beilstein J. Org. Chem. 2019, 15, 1945–1961, doi:10.3762/bjoc.15.190
Graphical Abstract
Figure 1: Contour plot of a HS-SPME–GC×GC–TOF–MS chromatogram (TIC) demonstrating the separation of volatile ...
Figure 2: Sesquiterpene hydrocarbons found in the headspace of Lemberger (Vitis vinifera subsp. vinifera, clo...
Figure 3: Detailed part of the two-dimensional contour plot (Figure 1) to demonstrate the result of a successful feed...
Scheme 1: First steps towards the formation of sesquiterpenes. The (S)-germacradienyl cation can be formed fr...
Scheme 2: Possible biosynthetic pathways of the sesquiterpene hydrocarbons d8-α-copaene, d8-β-copaene, d8-α-c...
Scheme 3: Mechanistic rationale for the generation of the sesquiterpene hydrocarbons δ-cadinene (14), α-copae...
Figure 4: MS spectra of genuine (d0) and deuterium-labeled (d6 and d8) α-cubebene (left panel) after administ...
Scheme 4: Putative formation pathways of the sesquiterpene hydrocarbons α-ylangene (5), β-ylangene (6), β-bou...
Figure 5: MS spectra and expected labeling patterns of A: d0-α-ylangene, B: d8-α-ylangene after administratio...
Figure 6: Expected labeling patterns of deuterium-labeled, aromatic sesquiterpenes after administration of [6...
Figure 7: MS spectra and expected labeling patterns of genuine and deuterium-labeled A: calamenene (isomer) a...
Figure 8: MS spectra and expected labeling patterns of genuine (d0) and deuterium-labeled (d9) β-elemene afte...
Scheme 5: Possible biosynthesis of d9-β-elemene, d9-(+)-valencene and d9-α-guaiene via germacrene A. *An inco...
Scheme 6: Mechanistic rationale for the generation of the sesquiterpene hydrocarbons γ-elemene and selina-3,7...
Figure 9: Mass spectra and associated structural formulas of d0-γ-elemene and d9-γ-elemene after administrati...
Figure 10: MS spectra and expected labeling patterns of genuine (d0) and deuterium-labeled (d9) guaiazulene af...
Scheme 7: Possible synthesis of d9-guaiazulene, d9-δ-elemene, d9-guaia-6,9-diene and d9-δ-selinene via germac...
Scheme 8: Possible biosynthesis of d6-(E)-β-caryophyllene and d5-α-humulene starting from farnesyl pyrophosph...
Figure 11: MS spectra and expected labeling patterns of d0-(E)-β-caryophyllene and d6-(E)-β-caryophyllene afte...