withanolide/natskygge

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Isolation and characterisation of irinans, androstane-type withanolides from Physalis peruviana L.

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Withanolides are steroidal lactones widespread in Nightshade plants with often potent antiproliferative activities. Additionally, the structural diversity of this compound class holds much potential for the discovery of novel biological activity. Here, we report two newly characterised withanolides,

Four novel withanolide-type steroids from the leaves of Solanum cilistum.

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Four novel withanolide-type steroids named cilistols p, pm, p1 and u (1-4, respectively), were isolated from the leaves of Solanum cilistum. The respective structures were characterized by spectroscopic means as follows: cilistol p (1) was

Antidepressant-like effect and toxicological parameters of extract and withanolides isolated from aerial parts of Solanum capsicoides All. (Solanaceae).

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The present work describes the evaluation of the antidepressant-like activity of the extract, fractions, and compounds obtained from the aerial parts of Solanum capsicoides. The methanolic extract (MESC) obtained by conventional maceration was partitioned with solvents of increasing polarities

Withanolide-type steroids from Solanum cilistum.

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Six withanolide-type steroids, named as cilistols a, b, d, q, g and f, respectively, were isolated from the leaves of Solanum cilistum. The major component among them, cilistol a, was characterized as (22R, 24S, 25R, 26R)-1-oxo-22, 26; 24, 25-diepoxy-17alpha, 26-dihydroxyergost-2,5-diene on the

Six new withanolide-type steroids from the leaves of Solanum cilistum.

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Six new withanolide-type steroids, designated cilistols v, t, i, j, y and w (1-6, respectively), were obtained from the leaves of Solanum cilistum. Their respective structures were characterized by spectroscopic means as follows: Cilistol v (1) was

Cilistepoxide and cilistadiol, two new withanolides from Solanum sisymbiifolium.

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In addition to the known cilistol A, two new withanolides have been isolated from leaves and stem of Solanum sisymbiifolium, and assigned the structures 1-oxo-5,6; 22,26; 24,25-triepoxy-17,26-dihydroxyergost-2-ene and 1-oxo-22,26; 24,25-diepoxy-5,6,17,26-tetrahydroxy ergost-2-ene, namely

Ecdysteroid agonist and antagonist activities in species of the Solanaceae.

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Previously, it has been shown that certain withanolides from Iochroma gesnerioides (Solanaceae) possess ecdysteroid antagonistic activity. Phytoecdysteroids (agonists) are widely distributed in the plant world, but solanaceous species have not been extensively examined for their presence. We have

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