Olefinic and acetylenic butenolides from Peucedanum alsaticum |
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| Institution: | 1. Institute of Organic Chemistry, Technical University of Berlin, D-1000 Berlin 12, West Germany;1. Biology Department, Faculty of Arts and Sciences, Najran University, 1988 Najran, Saudi Arabia;2. Zoology Department, Faculty of Science, Kafrelsheikh University, 33516 Kafr El Sheikh, Egypt;3. Zoology Department, Faculty of Science, Tanta University, Egypt;1. Basic Sciences in Infectious Diseases Research Center, Shiraz University of Medical Sciences, 71348-45794, Shiraz, Iran;2. Department of Medical Mycology and Parasitology, School of Medicine, Shiraz University of Medical Sciences, 71348-45794, Shiraz, Iran;3. Medicinal Plants Processing Research Center, Shiraz University of Medical Sciences, 71348-45794 Shiraz, Iran;1. Nanta SA, Madrid, Spain;2. EXOPOL, San Mateo de Gallego, Zaragoza, Spain;3. Departament de Ciència Animal, ETSEA, Universitat de Lleida, Lleida, Spain;1. Institute of Energy and Environment, University of São Paulo - Av. Prof. Luciano Gualberto, 1289 - Butantã, São Paulo, 05508-010, Brazil;2. Instituto Acende Brasil - Rua Joaquim Floriano, 466 - Itaim Bibi, São Paulo, 04534-004, Brazil |
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| Abstract: | The lipophilic root extract of Peucedanum alsaticum afforded four highly unstable butenolides which could be separated by HPLC. Whereas the stereochemistry of three olefinic derivatives, previously isolated only as their methyl ethers, were now established by 1H NMR, the structure of a new acetylenic lactone was additionally confirmed by 13C NMR. The compounds are probably formed by condensation of unsaturated C18-acids with pyruvate. |
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