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Flavonoid, iridoid, and lignan glycosides from Putoria calabrica (2001)

Calis, I. ; Heilmann, J. ; Tasdemir, Deniz ; [et al.]

American Chemical Society

In: Journal of Natural Products, 64 (7). pp. 961-964.

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Publication Date: 2020-07-21

Description: From the aerial parts of Putoria calabrica, two new flavonol triglycosides were isolated and their structures were elucidated as quercetin-3-O-[α-l-rhamnopyranosyl-(1→2)-α-l-arabinopyranoside]-7-O-β-d-glucopyranoside (1, calabricoside A) and quercetin-3-O-[4‘ ‘‘-O-caffeoyl-α-l-rhamnopyranosyl-(1→2)-α-l-arabinopyranoside]-7-O-β-d-glucopyranoside (2, calabricoside B). Additionally, seven iridoid and three lignan glycosides were isolated and characterized. Radical scavenging activities of all compounds were determined by quantifying their effects on luminol-enhanced chemiluminescence in formyl-methionyl-leucyl-phenylalanine (FMLP) stimulated human polymorphonuclear neutrophils (PMNs). Calabricoside A and B showed strong radical scavenging activity with IC50 values of 0.25 and 0.3 μM, respectively.

Type: Article , PeerReviewed

Format: text

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