Constituents of two Flourensia species.
نویسندگان
چکیده
The MeOH extract of aerial parts of Flourensia riparia Grisebach (Asteraceae) afforded a sesquiterpene lactone, 4beta-hydroxy-4,10alpha-dimethyl-7alphaH,8alphaH-eudesman-11-ene-8,12-olide, together with septuplinolide, its isomer at positions C-5 and C-10. In addition, known flavonoids, p-hydroxyacetophenone derivatives, carabrone and isoalantolactone were identified. Three known flavonoids and a benzofuran were isolated from Flourensia campestris Wedd.
منابع مشابه
Phytochemical differences between Calia secundiflora (Leguminosae) growing at two sites in Mexico.
The ecology and quinolizidine alkaloid chemistry of Calia secundiflora (Ortega) Yakovlev growing at two sites in Mexico were compared. At one site (Hidalgo) the vegetation was dominated by Flourensia resinosa and C. secundiflora, at the other site (Queretaro) C. secundiflora and Dodanaea viscosa were dominant. The Hidalgo site had shallower soils with less organic matter, N, P, and CaCO3. Seeds...
متن کاملDefoliation of Flourensia cernua (tarbush) with high-density mixed-species stocking
Interest in shrub use by livestock is increasing along with the rising demands placed on rangelands worldwide. Historically, Flourensia cernua (tarbush) has increased in the Chihuahuan Desert but receives limited use by cattle. Cattle, sheep and goats co-grazed eight 0.6 ha tarbush-dominated paddocks during two periods for up to nine days during two consecutive years. Cumulative tarbush defolia...
متن کاملFlavonoid Constituents in Some Species of Salvia L. (Lamiaceae) in Iran
Eight Salvia L. species including S. spinosa L., S. reuterana Boiss., S. macrosiphon Boiss., S. syriaca L., S. nemorosa L., S. virgata Jacq., S. sharifii Rech. f. & Esfand. and S. mirzayanii Rech. f. & Esfand. were studied for flavonoid compounds. These constituents were analyzed using two-dimensional maps on silica gel 60F thin layer chromatography. The flavonoid compounds of each species were...
متن کاملJackrabbit (Lepus californicus) herbivory changes dominance in desertified Chihuahuan Desert ecosystems
This study addressed the question: can herbivory by a medium size herbivore, black-tail jackrabbits (Lepus californicus), change dominance in desertified ecosystems dominated by two species of shrubs. Shrubs that were pruned by jackrabbits in plant communities dominated by creosotebush (Larrea tridentata) and tarbush (Flourensia cernua) were compared to shrubs not browsed by the rabbits. In the...
متن کاملChemical Constituents and Antioxidant Capacity of Ocimum basilicum and Ocimum sanctum
The chemical constituents of leaves, inflorescence, and flowers from Ocimum basilicum (Thai basil) and Ocimum sanctum (Holy basil) were analysed by gas chromatography-mass spectrometry. The chemical compounds were extracted by hydrodistillation, headspace-solid phase microextraction, and solvent extraction. The main constituents of Ocimum basilicum were identified to consist of estragole (...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
- Phytochemistry
دوره 65 14 شماره
صفحات -
تاریخ انتشار 2004