Browsing by Author "777d98a5-fefb-4846-8026-9288738d7f67"
Now showing items 21-39 of 39
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(JOHN WILEY, 2008-08)Two new mulinane-type derivatives: 16-hydroxy mulin-11,13-dien-20-oic (2) acid and 7 alpha,16-dihydroxy mulin-11,13-dien-20-oic (3) acid were obtained by microbial transformation of mulin-11,13-dien-20-oic acid (1), along ...
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(Bentham Science Publishers B.V., 2015)© 2015, Bentham Science Publishers.Phytochemical investigation of Azorella madreporica led to the isolation of four known compounds and an unknown chalcone. The structure of the new compound was identified by spectroscopy, ...
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(2009)The crystal structure of N-methyl-1H-indole-2-carboxamide C10H10N2O was determined by single crystal X-ray diffraction. The structure can be described as consisting of an indole group and as substituent, linked at C2, the ...
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(Sociedad Chilena de Quimica, 2011)Four compounds that belong to two structure types, namely dibenzylbutyrolactone and sesterterpenoids, were obtained from the extract of the strain Aspergillus sp. (2P-22), isolated from a marine sponge, Cliona chilensis. ...
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(TAYLOR & FRANCIS LTD, 2007-10-23)The family Trimusculidae produce labdane diterpenes, which differ in the degree and type of esterification with acetoxy and isovaleroyl ester, predominantly. In this article, we describe the isolation from the marine ...
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(SOC BRASILEIRA QUIMICA, 2006-02)A new and two previously known metabolites possessing a polypropionate carbon skeleton have been isolated from the marine gastropod mollusk Siphonaria lessoni, collected at Chilean coasts. Their structures have been ...
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(1988)The sponge Esperiopsis edwardii was examined for its steroids. It contains forty-three C27-C29 derivatives with four different types of nucleus: 3 β-hydroxy-Δ5-; 3β-hydroxy-5αH-; 3α-hydroxy-5α H- and 3-keto-Δ4-derivatives. ...
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(SOCIEDAD CHILENA DE QUIMICA, 2006-03)In a screening of Basidiomycete cultures isolated from marine invertebrates collected along the Chilean coastline for the production of antibiotics we identified a Penicillium brevicompactum strain as a producer of metabolites ...
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(2010)Careful examination of the published NMR data for isoepitaondiol, a meroditerpenoid from Stypopodium flabelliforme, suggests that its published structure 1 must be revised. On the basis of extensive 1D and 2D NMR studies, ...
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(SOC CHILENA QUIMICA, 2008-03)Ergosterol 1, peroxyergosterol 2, ergosta-4,6,8(14), 22-tetraen-3-one 3 and 24-ethyl-cholesta-4-ene-3-one 4 were isolated from the cultures of a fungus Geotrichum sp. obtained from a marine sediment. It was established ...
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(1988)Ten Δ5-sterols, making up 77% of the total fraction, and seven 5α-stanol derivatives were identified from the sponge Iophon proximun. The pattern is similar to that found in related sponges. © 1988.
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(1988)Thirteen sterols were identified from the marine sponge Tedania excavata. Among them, Δ5-derivatives were the principal components with minor amounts of stanols. The presence of a Δ5,7-derivative and a 3β-hydroxy-Δ5-7-keto ...
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(1998)We investigated the effects of the drug 14-keto-stypodiol diacetate (SDA) extracted from the seaweed product Stypopodium flabelliforme, in inhibiting the cell growth and tumor invasive behavior of DU-145 human prostate ...
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(1983)The isolation of chilenone A from Laurencia chilensis and the determination of its structure by spectral and x-ray crystallographic techniques is described. © 1983.
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(University of Agriculture, 2017)We presented a marine natural product, norsiphonarienone, isolated from Siphonaria lessoni, a pulmonate limpet of Central Chile. The norsiphonarienone was pharmacologically studied in rat thoracic aorta with endothelium ...
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(1980)Tropine, a pair of diastereoisomeric hygrolines and two new tropane alkaloids; 3α-senecioyloxytropan-6β-ol and 6β-angeloyloxytropan-3α-ol, were isolated from roots of Schizanthus hookeri. © 1980.
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(1988)Examination of two close collections of Plocamium cartilagineum separated into plants bearing carposporophyte, tetrasporophyte and gametophyte yielded the same qualitative chemical composition, but the three reproductive ...
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(American Chemical Society, 1998)Six new polyoxygenated marine monoterpenes have been isolated from the Antarctic alga Pantoneura plocamioides. The structure and relative stereochemistry of these compounds, denominated pantopyranoids A-C (1-3), and ...
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(2009)The absolute configuration of the pentacyclic ichthyotoxin stypotriol, a constituent of Stypopodium zonale, was deduced to be 3S,5R,8R,9R,10S,13S,14S-(-) -1 by vibrational circular dichroism spectroscopy of the derived ...
