Results 161 to 170 of about 114,627,962 (212)
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Withanolides from Jaborosa kurtzii
Journal of Natural Products, 2007Two new withanolides were isolated and characterized from the aerial parts of Jaborosa kurtzii, namely, jaborosalactone 43 (1), with a spiranoid delta-lactone at C-22, and jaborosalactone 44 (2), a 12-oxowithanolide, which may function as a biosynthetic precursor to 1.
Natalia S, Ramacciotti +1 more
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Withanolide Artifacts Formed in Methanol
Journal of Natural Products, 2013Methanol solutions of the main withanolides (6-8) naturally present in Physalis longifolia yielded five artificial withanolides (1-5), including three new compounds (1-3). Withanolides 1 and 2 were identified as intramolecular Michael addition derivatives, while withanolides 3-5 were the result of intermolecular Michael addition.
Cong-Mei, Cao +3 more
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Withanolides from Physalis coztomatl
Phytochemistry, 2015Six withanolides (1-6), as well as two known withanolides (physachenolide D 7 and withanoside VI 8), were isolated from the aerial parts of Physalis coztomatl (Solanaceae). Structural elucidations of 1-6 were achieved through 2D NMR and other spectroscopic techniques, while the structure of 1 was confirmed by X-ray crystallographic analysis.
Zhang, Huaping +5 more
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Phytochemistry, 1985
Abstract To excised leaves and 15-day-old seedlings of Acnistus breviflorus sodium [1- 14 C]acetate, [2- 14 C]mevalonolactone and [ 14 C-methyl]methionine were administered in separate experiments. From the absolute incorporation values of withaferin A (1), jaborosalactone A (2) and jaborosalactone D (3) isolated at different times after ...
Adriana S. Veleiro +2 more
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Abstract To excised leaves and 15-day-old seedlings of Acnistus breviflorus sodium [1- 14 C]acetate, [2- 14 C]mevalonolactone and [ 14 C-methyl]methionine were administered in separate experiments. From the absolute incorporation values of withaferin A (1), jaborosalactone A (2) and jaborosalactone D (3) isolated at different times after ...
Adriana S. Veleiro +2 more
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Phytochemistry, 1992
Abstract The leaves of Datura metel yielded three new withanolides in addition to lycium substance B, previously reported from other Datura species. The structures of the withanolides, clarified by comprehensive spectral analysis, showed features of typical daturalactones as well as of the withanolides of D. metel. p -Hydroxy cinnamic acid amide
Mohini Gupta +4 more
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Abstract The leaves of Datura metel yielded three new withanolides in addition to lycium substance B, previously reported from other Datura species. The structures of the withanolides, clarified by comprehensive spectral analysis, showed features of typical daturalactones as well as of the withanolides of D. metel. p -Hydroxy cinnamic acid amide
Mohini Gupta +4 more
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Withanolides of Acnistus breviflorus
Phytochemistry, 1981The chemical examination of Acnistus breviflorus afforded nine withanolides, four of which are new and were established as 2,3,24,25-tetrahydro-27-desoxywithaferin A (4β-hydroxy-5β,6β-epoxy-1-oxo-22 R-withanolide), 2,3-dihydro-27-desoxywithaferin A (4β-hydroxy-5β,6β-epoxy-22 R-witha-24-enolide), 5,6-desoxywithaferin A (4β,27-dihydroxy-1-oxo-22 R-witha ...
S. Sarma Nittala, David Lavie
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New withanolides from Mandragora officinarum: First report of withanolides from the Genus Mandragora
Fitoterapia, 2010Two new withanolides named mandragorolide A (1) and mandragorolide B (2) were isolated from the MeOH extract of the whole plant of Mandragora officinarum of Jordanian origin, along with five known withanolides namely larnaxolide A (3), withanolide B (4), datura lactone 2 (5), withanicandrin (6) and salpichrolide C (7). Compound 3 has been reported only
Rami K, Suleiman +2 more
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Biosynthesis of the triterpenoid withanolides in Withania somnifera
Current Opinion in Plant BiologyAshwagandha (Withania somnifera L. Dunal) is a versatile medicinal plant of Solanaceae family, renowned for its potent therapeutic properties, due to which it is extensively used in Indian traditional systems of medicine such as Ayurveda. The medicinal properties are attributed to specialized metabolites known as withanolides, which are chemically ...
Ananth Krishna Narayanan +1 more
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Withanolides from Ajuga parviflora
Journal of Natural Products, 1999Two new withanolides named ajugin A [14alpha,20, 28-trihydroxy-1-oxo-(20R,22R)-witha-3,5,24-trienolide] (1) and ajugin B [14alpha,20,27-trihydroxy-1-oxo-(20R,22R)-witha-5, 24-dienolide] (2) were isolated from the whole plant of Ajuga parviflora, and their structures were deduced by NMR and MS analyses.
, Khan, , Malik, , Ahmad, , Nawaz
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Antiproliferative Withanolides from Jaborosa Riojana
FitoterapiaSix previously undescribed withanolides, of which three had a normal glycosylated skeleton (Jaborosalactones 49-51) and three had a sativolide skeleton (12-O-methyl jaborosalactone 52, jaborosalactone 53, and 12-O-methyl jaborosalactone 53), were isolated from the aerial parts of Jaborosa riojana.
Lobatto, Virginia Laura +4 more
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