Results 141 to 150 of about 654 (167)
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(+)-Epimaritidine, an alkaloid from Zephyranthes rosea
Phytochemistry, 1985Abstract The isolation and determination, by spectroscopic analyses and chemical correlation, of the structure and stereochemistry of (+)-epimaritidine, a new alkaloid from Zephyranthes rosea , is reported. A facile transformation of maritidine to (+)-epimaritidine is described and the mechanism is appraised in the light of the thermodynamic ...
Shibnath Ghosal +2 more
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Another two novel ceramides from Zephyranthes candida
Chemistry of Natural Compounds, 2010From the the bulbs of Zephyranthes candida (Amaryllidaceae), another two novel ceramides have been isolated and identified. The structures of the two novel compounds were established as (2S,3S,4R,21E,2′R)2-[N-(2′-hydroxynonadecanoyl)-N-(1′′,2′′-dihydroxyethyl)amino]-21-hexacosene-1,3,4-triol, named zephyranamide C (1), and 1,3,4,5,6-pentahydroxy-2-(2 ...
Zhiping Wu +5 more
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Crinane and Lycorane Type Alkaloids from Zephyranthes citrina
Planta Medica, 2001Eight alkaloids have been isolated from Zephyranthes citrina (Amaryllidaceae). The alkaloid oxomaritidine is reported here for the first time from a natural source. The structure and stereochemistry of the alkaloids were determined by physical and spectroscopic methods.
M R, Herrera +5 more
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ChemInform Abstract: Two Alkaloids from Zephyranthes carinata.
ChemInform, 1998AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
K. KOJIMA +3 more
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2013
Abstract In the present thesis, a phytochemical study of three plants from the flora of Brazil was carried out. The study was performed by the isolation and, subsequently, the structural identification of some of the containing alkaloids. The selected plants were the Hippeastrum aulicum, the Hippeastum vittatum and the Zephyranthes gracilifolia Baker ...
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Abstract In the present thesis, a phytochemical study of three plants from the flora of Brazil was carried out. The study was performed by the isolation and, subsequently, the structural identification of some of the containing alkaloids. The selected plants were the Hippeastrum aulicum, the Hippeastum vittatum and the Zephyranthes gracilifolia Baker ...
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APOMIXIS IN ZEPHYRANTHES TEXANA HERB.
American Journal of Botany, 1951ZEPHYRANTHES TEXANA Herb. is a species of the subtribe Zephyranthinae of the Amaryllidaceae. In its range it is restricted to the southeastern quarter of Texas where it is known as a yellow rain-lily. It is the same species in which Pace (1913) reported apomixis. At that time it was called Atamosco texana but Zephyranthes Herb.
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The Breeding System of Zephyranthes atamasco (Amaryllidaceae)
Bulletin of the Torrey Botanical Club, 1991mean ? standard deviation) as those from cross-pollinations (24.7 ? 14.0). Germination was slightly lower for seeds produced from self-pollinations (62.3 ? 36.1%) as compared with seeds from cross-pollinations (77.7 ? 22.9%). Self- and cross-pollinations resulted in fruits with significantly more seeds than open-pollinations (13.4 ? 7.3).
Steven B. Broyles, Robert Wyatt
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Flavans with potential anti-inflammatory activities from Zephyranthes candida
Bioorganic & Medicinal Chemistry Letters, 2016Three new flavans, (2R,3R)-7-methoxy-flavan-3-ol (1), (2S)-7,3'-dihydroxy-4'-methoxyflavan 3'-O-β-d-glucopyranoside (2), (2S)-7,3'-dihydroxy-4'-methoxyflavan 7-O-β-d-glucopyranoside (3), and one known flavan (4) were isolated from the whole plants of Zephyranthes candida (Amaryllidacea).
Guanqun, Zhan +5 more
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Cytotoxic and anti-inflammatory active plicamine alkaloids from Zephyranthes grandiflora
Fitoterapia, 2018Phytochemical investigation on the 95% EtOH extract of the whole plants of Zephyranthes grandiflora resulted in the isolation of six new 4a-epi-plicamine-type alkaloids, zephygranditines A-F (1-6), including three novel 11,12-seco-plicamine-type alkaloids.
Hong-Yong, Wang +3 more
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Alkaloide aus Crinum‐, Zephyranthes‐, Leucojum‐ und Clivia‐Arten
Chemische Berichte, 1957AbstractAus Crinum yemense, C. asiaticum, C. defixum, C. laurentii, Zephyranthes citrina, Z. carinata, Z. rosea, Cooperanthes hortensis, Leucojum aestivum, L. autumnale und Clivia elisabethae werden mehrere bereits in anderen Amaryllidaceen aufgefundene Alkaloide isoliert. C. yemense enthält ferner eine bisher nicht bekannte Base Yemensin.
Hans‐G. Boit +2 more
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