Flavonoids from leaves of Mauritia flexuosa

Chemical Composition and Antioxidant Activity of Euterpe oleracea Roots and Leaflets

“…Apigenin C -glycosides are phytochemical markers specific to a few Arecaceae species, while C -glycosyl luteolin derivatives are more common amongst palm tree species [ 28 ]. More recently, C -glycosyl derivatives of apigenin, close to those found in this work, were identified in another Amazonian palm tree species, Mauritia flexuosa [ 29 ]. The presence of sulfated flavones in the leaflet extracts of E .…”

1H‐NMR metabolomics for evaluating the protective effect of Clinacanthus nutans (Burm. f) Lindau water extract against nitric oxide production in LPS‐IFN‐γ activated RAW 264.7 macrophages

“…A detailed analysis of the 1 H‐NMR spectra enabled the identification of a number of the compounds as shown in Table . A total of 29 primary and intermediate metabolites and another 27 secondary metabolites were tentatively identified in air‐dried C. nutans leaves by comparing to Chenomx databases, HMDB online databases, and literature data . In addition, the problem of overlapping signals found in the one‐dimensional (1D) NMR spectra was resolved by two‐dimensional 1 H‐ 1 H J ‐resolved experiments (Figure S2).…”

“…A detailed analysis of the 1 H-NMR spectra enabled the identification of a number of the compounds as shown in 15,17,[22][23][24][25] In addition, the problem of overlapping signals found in the one-dimensional (1D) NMR spectra was resolved by two-dimensional 1 H-1 H J-resolved experiments ( Figure S2). Compared with previous metabolites identification studies, such as that by Khoo et al 17 which focused on 70% ethanolic extract, the present study further investigated the leaf extracts that were prepared from various concentrations of ethanol-water solvent.…”

Identification of some Bioactive Metabolites in a Fractionated Methanol Extract from Ipomoea aquatica (Aerial Parts) through TLC, HPLC, UPLC‐ESI‐QTOF‐MS and LC‐SPE‐NMR Fingerprints Analyses

“…The 1 H–NMR data of compound 4 (peak 4 in Fig. ) were in agreement with previously reported assignments (de Oliveira et al ., ) and the compound was identified as rutin. Moreover, 1 H–NMR data (400 MHz, CD 3 OD) of compound 5 (peak 5 in Fig.…”