Two unique chloro-pregnane steroids have been isolated from the eastern Pacific octocoral Carijoa multiflora and their structures and stereochemistries were determined on the basis of spectral studies and molecular mechanics calculations. © 2003 Elsevier Ltd. All rights reserved. Pregnane steroids and their glycosides are rare in the marine environment and, ahhough the first pregnane derivative...

Essential oils from leaves of Lippia multiflora, Mentha x piperita and Ocimum basilicum from Burkina Faso were analysed by GC-FID and GC-MS. Major components were p-cymene, thymol, b-caryophyllene, carvacrol and carvone for L. multiflora, menthol and iso-menthone for M. x piperita and, linalool and eugenol for O. basilicum. The essential oils and their major monoterpene alcohols were tested aga...

[structure: see text] An unprecedented biogenetically interesting bicyclic prostanoid 1, carijenone, has been isolated from the eastern Pacific octocoral Carijoa multiflora. The C-12 oxygenated function, characteristic of the coral cyclopentanone fatty acid derivatives, is involved in the formation of a five-membered oxane ring fused to the cyclopentane network. Its structure and stereochemistr...

The stimulatory effect of Zataria multiflora Boiss (Labiatae) and carvacrol on β-adrenoceptors was examined on guinea pig trachea. The effects of three concentrations of aqueous-ethanolic extract, carvacrol, and propranolol (β-receptor antagonist) on β-adrenoceptors were tested in nonincubated (group 1, n = 8) and incubated tracheal chains with 1 μM chlorpheniramine (histamine H1 receptor antag...

Pterosins are abundant in ferns, and pterosin A was considered a novel activator of adenosine monophosphate-activated protein kinase, which is crucial for regulating blood glucose homeostasis. However, the distribution of pterosins in different species of ferns from various places in Taiwan is currently unclear. To address this question, the distribution of pterosins, glucose-uptake efficiency,...

Produksi madu uniflora cukup terbatas, khususnya yang dihasilkan oleh lebah hutan Apis dorsata. Madu dorsata dari nektar bunga pohon Akasia Mangium (Acacia mangium) merupakan salah satu premium sangat populer di Indonesia dan Malaysia. Studi uji keaslian Acacia mangium menggunakan spektroskopi ultraviolet belum dilakukan. Penelitian ini dilakukan untuk mengevaluasi penggunaan kemometrika membed...

Plant roots show morphological plasticity to adapt heterogeneous nitrogen (N) and phosphorus (P) distribution, but how fertilizer placement affects root growth nutrient uptake of perennial non-herbaceous species (including Rosa multiflora Thunb. ex Murr. that was the subject this study) is not understood. A pot experiment conducted with five N P fertilization rates determine appropriate applica...