Sesquiterpene lactones and other constituents from Schistostephium species

Antibacterial compounds from Salvia adenophora Fernald (Lamiaceae)

“…Comparison of NMR spectra of compounds 1 and 4 with those of compounds 2 and 3 indicated the presence of an acetyl moiety esterified to the HOAC2 group (Table 1). These data were consistent with those of derivatives of oxophytodienoic acid (Bohlmann et al, 1982(Bohlmann et al, , 1983. The data of H9 and H13 were largely consistent with those published for 12-oxo-cis-10,15-phytodienoic acid and its methyl ester (Ainai et al, 2003;Baertschi et al, 1988;Crombie and Mistry, 1991;Kobayashi and Matsuumi, 2002) (compounds 3 and 4), and for 12-oxo-trans-10,15-phytodienoic acid and its methyl ester (compounds 1 and 2), respectively (Ainai et al, 2003;Baertschi et al, 1988;Bohlmann et al, 1982;Chu et al, 1995;Kobayashi and Matsuumi, 2002).…”

“…Oxylipins are a diverse group of lipid-derived signaling compounds, found in all organisms (Jahn et al, 2008), involved in plant growth and development (Tian et al, 2012). Plant oxylipins have been described as free oxylipins (Bohlmann et al, 1982(Bohlmann et al, , 1983Ohashi et al, 2005;Tamayo-Castillo et al, 1989;Zdero et al, 1991), as oxylipins esterified with a number of other molecules in the cell, like glycerolipids (glycolipids, phospholipids, and neutral lipids) (Andersson et al, 2006;Bottcher and Weiler, 2007;Buseman et al, 2006;Göbel and Feussner, 2009;Stelmach et al, 2001), and oxylipins conjugated to amino acids and other metabolites, such as sulfate, glutathione, ethanolamine, and carbohydrates (Mosblech et al, 2009). The compounds present in the exudate material of S. adenophora were free oxylipins.…”

A Novel Class of Oxylipins,sn1-O-(12-Oxophytodienoyl)-sn2-O-(hexadecatrienoyl)-monogalactosyl Diglyceride, from Arabidopsis thaliana

“…However, the sn1 linkage of the OPDA has been proven by the enzymatic methods already described above. The chemical shifts of the carbon and proton resonances, as well as the multiplicity, are in agreement with the data reported formerly for OPDA (24) and methyl-(7Z,10Z,13Z)-hexadecatrienoate (25). The overlapping of the signals of the olefinic protons 7Љ, 8Љ, 10Љ, 11Љ, 13Љ, 14Љ, 15ٞ, and 16ٞ at ␦ 5.30 -5.50 ppm did not allow the determination of the E/Z configuration.…”

Analysis of 12-Oxo-phytodienoic Acid Enantiomers in Biological Samples by Capillary Gas Chromatography–Mass Spectrometry Using Cyclodextrin Stationary Phases

“…(/)-12-oxo-PDA (12). Unfortunately, no information on 2 These two authors contributed equally to the results.…”