Results 141 to 150 of about 1,602 (196)

Vascular plants from Pantanal Park Road , Mato Grosso do Sul, Brazil. [PDF]

open access: yesBiodivers Data J
Santiago Urquiza MV   +8 more
europepmc   +1 more source

Another two novel ceramides from Zephyranthes candida

Chemistry of Natural Compounds, 2010
From 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 ...
Ming Wang
exaly   +2 more sources

Antineoplastic Agents, 162. Zephyranthes candida

Journal of Natural Products, 1990
The Chinese medicinal plant Zephyranthes candida was found to contain a cytostatic constituent. Separation of a n-BuOH extract directed by results of a bioassay employing the P-388 lymphocytic leukemia led to trans-dihydronarciclasine [2] as the principal cytostatic agent with ED50 3.2 X 10(-3) micrograms/ml.
G R, Pettit   +4 more
openaire   +2 more sources

Alkaloids of zephyranthes flava

Phytochemistry, 1986
Abstract From fresh, mature seeds of Zephyranthes flava , two new 2-oxyphenanthridinium alkaloids, zefbetaine and zeflabetaine along with 15 known free and glucosyloxy alkaloids have been isolated by gradient solvent extraction, chromatography and derivatization.
Shibnath Ghosal   +2 more
openaire   +1 more source

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   +2 more
openaire   +1 more source

ZEPHYRANTHES GRACILIS HERB. AND ZEPHYRANTHES MINIMA HERB.

American Journal of Botany, 1943
PROBABLY NOT in the entire field of botanical taxonomy and plant nomenclature is greater confusion to be found than now exists around the plants represented by the names Zephyranthes gracilis Herb., Z. minima Herb., Z. Hieronymi Pax and Amaryllis parvula Seub. Several attempts have been made to straighten out the identity of these plants but so far the
openaire   +1 more source

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   +8 more
openaire   +2 more sources

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   +2 more
openaire   +1 more source

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