Results 111 to 120 of about 365 (152)

Four new Amaryllidaceae alkaloids from Zephyranthes candida

Journal of Natural Medicines, 2014
Four new Amaryllidaceae alkaloids (1-4) possessing a homolycorine-type or a crinine-type skeleton have been isolated from the aerial part of Zephyranthes candida, and their structures were elucidated on the basis of spectroscopic data. The stereochemistry was elucidated by combination of NOESY correlations and CD analyses.
Nanase, Shitara, Yusuke, Hirasawa, Shunsuke, Hasumi, Tadahiro, Sasaki, Misaki, Matsumoto, Chin Piow, Wong, Toshio, Kaneda, Yoshinori, Asakawa, Hiroshi, Morita   +8 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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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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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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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).
Zhiping Wu, Yu Chen, Xu Feng, Bing Xia, Ming Wang, Yunfa Dong   +5 more
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Antineoplastic Agents, 105. Zephyranthes grandiflora

Journal of Natural Products, 1984
G R, Pettit, V, Gaddamidi, G M, Cragg
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