Veronica: Acylated flavone glycosides as chemosystematic markers |
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| Affiliation: | 1. Department of Higher Plant Systematics, Institute of Botany, University of Vienna, Rennweg 14, A-1030 Vienna, Austria;2. Royal Botanic Gardens, Kew, Richmond, Surrey, TW9 3AB, UK;3. Department of Chemistry, The Technical University of Denmark, DK-2800 Lyngby, Denmark;1. School of Pharmacy, Guangdong Pharmaceutical University, Guangzhou 510006, China;1. School of Traditional Chinese Materia Medica, Shenyang Pharmaceutical University, Wenhua Road 103, Shenyang 110016, China;2. State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, Guangxi Normal University, Guilin, China;3. College of Traditional Chinese Medicine, Xinjiang Medical University, Urumqi 830011, China;1. Pharmacognosy Department, Faculty of Pharmacy, Mansoura University, Mansoura 35516, Egypt;2. National Center for Natural Products Research, School of Pharmacy, University of Mississippi, University, MS 38677, USA;3. Botany Department, Ecology, Faculty of Science, Mansoura University, Mansoura 35516, Egypt;1. IIM-CSIC, Av. Eduardo Cabello 6, Vigo 36208, Spain;2. Department of Organic Chemistry, Biomedical Research Center (CINBIO), and Southern Galicia Institute of Health Research (IISSG), Universidade de Vigo, 36310 Vigo, Spain |
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| Abstract: | HPLC/DAD and LC–MS of an extract of Veronica spicata (subgenus Pseudolysimachium, Plantaginaceae) revealed the presence of six 6-hydroxyluteolin glycosides acylated with phenolic acids, three of which are new compounds and which we called spicosides. A flavonoid survey of seven more species belonging to V. subgenus Pseudolysimachium and eight species of V. subgenus Pentasepalae showed that all the Pseudolysimachium species and four of the Pentasepalae species produced 6-hydroxyflavone glycosides, whereas the remaining four Pentasepalae species contained acetylated 8-hydroxyflavone glycosides instead. Spicosides appeared to be common in subgenus Pseudolysimachium (detected in five out of eight species), but we did not find them in subgenus Pentasepalae. Previously, acetylated 8-hydroxyflavone glycosides have been isolated from or detected in eight species of V. subgenus Pentasepalae (in 13 species altogether including the new results) and seven species of V. subgenus Pocilla. However, 6-hydroxyflavone glycosides occur in some other species of these subgenera. The results are discussed in an evolutionary context. |
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