Results 141 to 150 of about 742 (186)

Flavans from Zephyranthes flava

Phytochemistry, 1985
Abstract A new optically active flavan aglucone, 7-hydroxy-3′,4′-methylenedioxyflavan, and its 7-glucoside have been isolated from the bulbs of Zephyranthes flava , collected at flowering. Additionally, two known flavans, 7,4′-dihydroxy-3′-methoxyflavan and 7-methoxy-2′-hydroxy-4′,5′-methylenedioxyflavan, have been isolated for the first time from ...
Shibnath Ghosal, Sushil K. Singh, Radhey S. Srivastava   +2 more
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The Breeding System of Zephyranthes atamasco (Amaryllidaceae)

Bulletin of the Torrey Botanical Club, 1991
mean ? 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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(+)-Epimaritidine, an alkaloid from Zephyranthes rosea

Phytochemistry, 1985
Abstract 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, null Ashutosh, Sushma Razdan   +2 more
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Two alkaloids from Zephyranthes carinata

Phytochemistry, 1998
Abstract Two new Amaryllidaceae alkaloids, 1- O -(3-hydroxybutyryl) pancratistanin and 1-O-(3-O-β- d -glucopyranosylbutyryl) pancratistatin, were isolated from the bulbs of Zephyranthes carinata . The structures of the two alkaloids were established by comprehensive spectral analysis.
Keisuke Kojima, Motoh Mutsuga, Makoto Inoue, Yukio Ogihara   +3 more
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APOMIXIS IN ZEPHYRANTHES TEXANA HERB.

American Journal of Botany, 1951
ZEPHYRANTHES 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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Phosphatidylpyrrolophenanthridine alkaloids from Zephyranthes flava

Phytochemistry, 1987
Abstract Four new alkaloidal phospholipids, 2-O-glycerophosphoryllycorine, phosphatidyllycorines, phosphatidylpseudolycorines and phosphatidyllycorinium methocation, were isolated from the flowers of Zephyranthes flava. The structures of these compounds were established by comprehensive spectral analyses, chemical transformations and synthesis, where
Shibnath Ghosal, Sushil K. Singh, Sankara G. Unnikrishnan   +2 more
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Crinane and Lycorane Type Alkaloids from Zephyranthes citrina

Planta Medica, 2001
Eight 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, A K, Machocho, R, Brun, F, Viladomat, C, Codina, J, Bastida   +5 more
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Two New Ceramides From Zephyranthes candida

Chemistry of Natural Compounds, 2009
Two new ceramides were isolated from the bulbs of Zephyranthes candida. Their structures were established as (2S,3S,4R,13E)-1,3,4-trihydroxy-2-[(2′R)-2′-hydroxytetracosanoylamino]-13-octadecene, named zephyranamide A (1) and (2S,3S,4R)-1,3,4-trihydroxy-2-octacosanoylaminohexadecene, named zephyranamide B (2).
Yunfa Dong
exaly   +2 more sources

Flavans with potential anti-inflammatory activities from Zephyranthes candida

Bioorganic & Medicinal Chemistry Letters, 2016
Three 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, Junfei, Zhou, Tingting, Liu, Guijuan, Zheng, Haji Akber, Aisa, Guangmin, Yao   +5 more
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การศึกษาสายสัมพันธ์ของบัวจีนดอกสีชมพูเล็ก (Zephyranthes rosea Lindl.) และบัวจีนดอกชมพูใหญ่ (Zephyranthes grandiflora Lindl.)

บัวจีนดอกชมพูเล็ก (Zephyranthes rosea Lindl.) และบัวจีนดอกชมพูใหญ่ (Zephyranthes grandiflora Lindl.) มีลักษณะทางสัณฐานวิทยาของอวัยวะต่างๆ คล้ายคลึงกันต่างกันที่บัวจีนดอกชมพูเล็กมีขนาดของอวัยวะต่างๆ เล็กกว่าบัวจีนดอกชมพูใหญ่ นอกจากนี้บัวจีนดอกชมพูเล็กมีจำนวนโครโมโซมน้อยกว่า คือ 2n = 24 ประกอบด้วย metacentric submetacentric และ acrocentric chromosome ...
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