Constituents of Nepeta caesarea.
The acetone extract of Nepeta caesarea yielded four new nepetalic acid derivatives, 3'alpha-[beta-sitosteryl-3beta-oxy]dihydronepetalactone (1), 3'beta-[5alpha-stigmast-7-ene-3beta-oxy]dihydronepetalact one (2), 3'alpha-[olean-12-ene-28-oyl-3beta-oxy]dihydronepetalactone (3), and 3'alpha-[lup-20(29)-ene-28-ol-3beta-oxy]dihydronepetalactone (4). The structures were elucidated by NMR and MS techniques.
Topçu
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Faculty of Pharmacy, University of Istanbul, 34452 Beyazit, Istanbul, Turkey. topcu@mam.gov.tr
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Yalçin
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D007783:Lactones / Q000737:chemistry / Q000302:isolation & purification*; D019686:Lamiaceae / Q000737:chemistry*; D009682:Magnetic Resonance Spectroscopy; D013058:Mass Spectrometry; D008968:Molecular Conformation; D011753:Pyrones / Q000737:chemistry / Q000302:isolation & purification*; D013055:Spectrophotometry, Infrared
D007783:Lactones; D011753:Pyrones