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  • Title: Three new oleanane-type triterpenoid saponins from the seeds of Celosia cristata L.
    Author: Liu X, Zhang J, Guo K, Jia A, Zhang M, Shi Y, Liu C, Xiao L, Sun Z.
    Journal: Nat Prod Res; 2018 Jan; 32(2):167-174. PubMed ID: 28659043.
    Abstract:
    Phytochemical investigation of the 1-butanol soluble fraction of 60% ethanol extract of the seeds of Celosia cristata L. led to the identification of three new oleanane-type triterpenoid saponins. Using 1D and 2D NMR experiment methods, ESI-MS analysis and acid hydrolysis, their structures were identified as 3-O-[β-D-xylopyranosyl-(1 → 3)-β-D-glucuronopyranosyl]-2β-hydroxy-oleanolic acid-28-O-β-D-glucopyranoside (1), 3-O-[β-D-xylopyranosyl-(1 → 3)-β-D-glucuronopyranosyl]-2β, 23-dihydroxy-oleanolic acid-28-O-β-D-glucopyranoside (2) and 3-O-[β-D-glucopyranosyl-(1 → 4)-β-D-glucopyranosyl]-2-hydroxyl-medicagenic acid-28-O-β-D-glucopyranosyide (3), respectively.
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