Flavonoid Glucuronides and a Chromone from the Aquatic Macrophyte <i>Stratiotes aloides</i>

Conrad, Jürgen; Förster-Fromme, Bernhard; Constantin, Mihaela‐Anca; Ondrus, V.; Mika, Sabine; Balcı, Fadime Mert; Klaiber, Iris; Pfannstiel, Jens; Möller, Wolfgang; Rösner, Harald; Förster-Fromme, Karin; Beifuß, Uwe

doi:10.1021/np800769g

Cited by 32 publications

(20 citation statements)

References 30 publications

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“…Different from 3, acid hydrolysis of 4 afforded D-glucuronic acid, which was determined by GC analysis of its derivative. Another sugar unit was also identified to be arabinose by comparison of the NMR data with those reported in the literature [14,15]. However, HMBC correlation between H-1′′ (δ H 5.27) and C-4′′ (δ C 83.2), as well as the ROESY correlations between H 2 -5′′ (δ H 3.57 and 3.43) and H-1′′ (δ H 5.27)/H-3′′ (δ H 4.09) were observed, indicating that the arabinose unit in 4 was arabinofuranose instead of arabinopyranose in 1-3.…”

Section: -(45-dimethylthiazol-2-yl)-25-diphenyl Tetrazolium Bromidmentioning

confidence: 80%

FlavoneC-glycosides from the Leaves ofLophatherum gracileand TheirIn VitroAntiviral Activity

et al. 2011

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Four new flavone C-glycosides, luteolin 6-C-α-L-arabinopyranosyl-7-O-β-D-glucopyranoside, apigenin 6-C-β-D-galactopyranosiduronic acid (1 → 2)-α-L-arabinopyranoside, luteolin 6-C-β-D-galactopyranosiduronic acid (1 → 2)-α-L-arabinopyranoside, and luteolin 6-C-β-D-glucopyranosiduronic acid (1 → 2)-α-L-arabinofuranoside, along with three known ones, were isolated from the leaves of Lophatherum gracile. The structures of the new compounds were elucidated by extensive spectroscopic methods as well as acid hydrolysis. All the flavone glycosides isolated from this plant were screened for their in vitro antiviral activity against respiratory syncytial virus (RSV) with cytopathic effect (CPE) reduction assay, and several flavone 6-C-monoglycosides showed potent in vitro anti-RSV effect.

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Section: -(45-dimethylthiazol-2-yl)-25-diphenyl Tetrazolium Bromidmentioning

confidence: 80%

FlavoneC-glycosides from the Leaves ofLophatherum gracileand TheirIn VitroAntiviral Activity

et al. 2011

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“…Compound 5 was identified as 5,5 0 -oxybis-1,3-benzenediol (Masae, Mikiko, Kyoko, & Shuzo, 1994 181.8, 106.5, 162.4, 105.3, 163.8, 95.4, 157.6, 122.5, 114.3, 147.6, 151.7, 116.4, 119.3, 99.7, 74.5, 75.6, 71.4, 75.5, 61.2. Compound 7 was characterized as 5,3 0 ,4 0 -trihydroxyflavanone 7-glucoside (Conrad et al, 2009). …”

Section: Extraction and Isolationmentioning

confidence: 99%

Pods of Khejri (Prosopis cineraria) consumed as a vegetable showed functional food properties

Liu

Singh²,

Nair

2012

Journal of Functional Foods

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Antioxidant Antiinflammatory Triterpenoids Piperidine alkaloids Phenolics A B S T R A C T The arid plant Prosopis cineraria (Fabaceae) is known as Khejri in India or the golden tree of Indian deserts. The dried pods are consumed as a vegetable and leaves as traditional medicine to cure a wide range of diseases in the state of Rajasthan, India. The pods of this plant have not been investigated for their bioactive components, hence we have done so in this study. The dried pods were boiled with water to afford the aqueous extract. Extraction of the residue gave methanolic extract. The lipid peroxidation (LPO) and cyclooxygenase enzymes (COX-1 and -2) inhibitory activities of extracts and major compounds present in the bioactive extracts were then determined. Purification of bioactive extracts yielded compounds 1-7. The absorbance of 1-7 at 570 nm ranged between 0.15 and 0.45 at 50 lg/mL whereas vitamin C and tert-butylhydroquinone (TBHQ) at 25 lg/mL gave an absorbance of 0.5 in the MTT [3-(4,5-dimethylthiazole-2-yl)-2,5-diphenyltetrazolium bromide] assay.At 25 lg/mL concentration, compounds 1-7 inhibited LPO, COX-1 and -2 enzymes between the ranges of 15-87%, 21-67% and 16-59%, respectively. This is the first report of the chemical and biological activities of the edible part of this plant.

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“…To date there have been few studies on the chemical composition of S. aloides L. leaves. Previous phyto-chemical assays included only a comparative analysis of the total content of polyphenolic compounds in various types of leaves of selected aquatic plants (Smolders et al 2000), and the qualitative composition of flavonoids found in the leaves of a given plant (Conrad et al 2009). Species with submerged leaves showed a significantly lower phenolic content than species with emergent or floating leaves (Smolders et al 2000).…”

Section: Discussionmentioning

confidence: 99%

Adaptations of morphology, anatomy and phytochemical composition of leaves of Stratiotes aloides L. emergent forms

Toma

Ефремов

Wojnar

2019

Limnological Review

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Interdisciplinary research was carried out on the impact of climate on the diversity and morphology of Stratiotes aloides L. emergent forms’ phenotype in various latitudes. The objectives of the research were: 1. to determine whether the climate influences the diversity of emergent forms, 2. to determine the diversity of morphological and anatomical traits and chemical composition of S. aloides specimens in Poland and Russia, 3. to examine the content of, and determine the correlation between phenols, phenolic acids, flavonoids, anthocyanins, and tannins in S. aloides. The research demonstrated the substantial diversity of 13 morpho-anatomical traits, and 5 phytochemical traits, both between regions, and individual habitats. Principal Component Analysis (PCA) demonstrated different correlation patterns for the analysed substances between regions characterised by different temperature ranges. S.aloides shows substantial abilities to adapt in terms of structure and physiology to the aquatic environment in various climate zones.

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Flavonoid Glucuronides and a Chromone from the Aquatic Macrophyte Stratiotes aloides

Cited by 32 publications

References 30 publications

FlavoneC-glycosides from the Leaves ofLophatherum gracileand TheirIn VitroAntiviral Activity

FlavoneC-glycosides from the Leaves ofLophatherum gracileand TheirIn VitroAntiviral Activity

Pods of Khejri (Prosopis cineraria) consumed as a vegetable showed functional food properties

Adaptations of morphology, anatomy and phytochemical composition of leaves of Stratiotes aloides L. emergent forms

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