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Two new withanolides (1-2) together with five known ones (3-7), and three known aromatic glycosides (8-10) were isolated from the dried stems and leaves of Nicandra physaloides, an edible and… Click to show full abstract
Two new withanolides (1-2) together with five known ones (3-7), and three known aromatic glycosides (8-10) were isolated from the dried stems and leaves of Nicandra physaloides, an edible and medicinal plant. Their structures were identified by extensive spectroscopic analyses or comparison with literature data. The absolute configuration of 2 was assigned via X-ray crystallography. Compound 1 with a spiroketal moiety is relatively unusual in withanolides. Aromatic glycosides (8-10) showed potent inhibitory activity against LPS-induced nitric oxide production in RAW 264.7 macrophages, with IC50 values from 4.69 to 16.12 μM.
Journal Title: Fitoterapia
Year Published: 2018
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