Flavonoid Glycosides from the Leaves of <i>Machilus philippinensis</i>

Lin, Hsiao‐Ching; Tsai, Sung-Fang; Lee, Shoei‐Sheng

doi:10.1002/jccs.201190020

Cited by 21 publications

(22 citation statements)

References 22 publications

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“…These results are consistent with the structure of units, which are all epicatechin with hydroxyl groups at C3′ and C4′. According to the evidence outlined above and a comparison of the ESI‐MS, 1 H‐NMR and 13 C‐NMR data with values in the literature, compound 2 was determined to be parameritannin A1 (epicatechin‐(2β → O7,4β → 8)‐[epicatechin‐(4β → 6)]‐epicatechin‐(4β → 8)‐epicatechin) (Fig. b).…”

Section: Resultssupporting

confidence: 83%

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Structural characterization and bioactivity of proanthocyanidins from indigenous cinnamon (Cinnamomum osmophloeum)

Lin

Hsu

et al. 2016

J Sci Food Agric

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Section: Resultssupporting

confidence: 83%

“…The α‐glucosidase (EC 3.2.1.20) inhibitory assay was performed according to Lin and Lee . The α‐amylase (EC 3.2.1.1) inhibitory assay was carried out according to Apostolidis et al with slight modifications.…”

Section: Methodsmentioning

confidence: 99%

Structural characterization and bioactivity of proanthocyanidins from indigenous cinnamon (Cinnamomum osmophloeum)

Lin

Hsu

et al. 2016

J Sci Food Agric

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“…The 13 C NMR spectrum showed that procyanidins units are connected mostly by C4-C8 and C4-C6 interflavonoid bonds to B-type procyanidins: 36.2 ppm is for C4 in interflavonoid cis/trans link and a small signal at 29.8 ppm is for C4 in terminal units, 106.2 ppm (C8 in C4-C8) and 96.4 ppm (C6 in C4-C6) (Balde et al 1991b;Balde et al 1995;Navarette et al 2010). Judging by a diagnostic feature peak at 100.1 ppm related to ketal carbon signal (C2 in A-type procyanidins), condensed tannins of grey alder also contain double bond flavanyl units in the molecule (2C-O-7C), which is typical for A-type procyanidins (Lin and Lee 2010).…”

Section: Figurementioning

confidence: 97%

Structure and antioxidant activity of diarylheptanoids extracted from bark of grey alder (Alnus incana) and potential of biorefinery-based bark processing of European trees

et al. 2011

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The bark of trees has a big potential as a source of green chemicals. The aim of the present work was to valorise the potential of deciduous tree species with this regard. Three widely spread trees in Europe (grey alder, ash tree, aspen) were in focus as a source of polyphenols, and the yields of polyphenolic compound in the extracts were considered as evaluation criteria. The highest yields of hydrophilic extractives were found in barks of grey alder and aspen (36.8 and 22.9%, respectively). In the former, the highest antioxidant activity was found towards free radicals (DPPH • and ABTS •q ) and superoxide anion radical. Open chain diarylheptanoids, mainly oregonin, were identified as the major constituents of the grey alder hydrophilic extract. In addition to oregonin, the presence of 2 linear diarylheptanoids wplatyphylloside and 1,7-bis-(3,4-dihydroxyphenyl)-heptane-5-O-b-D-glucopyranosidex was confirmed. For the first time, the compounds 1,7-bis-(3,4-dihydroxyphenyl)-3-hydroxyheptane-5-O-b-D-xylopyranoside and 1,7-bis-(3,4-dihydroxyphenyl)-heptane-3-one-5-O-b-D-glucopyranoside were detected in grey alder bark. The results of experiments in vitro and in vivo have shown the high potential for diarylheptanoids-containing extracts in prophylaxis and/or treatment of diseases due to the metabolic disorders and ageing. The biological activity of grey alder extract was confirmed in in vitro experiments by incubation of human blood samples. In vivo experiments with rats also showed positive results. The conclusion is that grey alder extracts have a high potential for prevention of ageing related pathologies. Besides diarylheptanoids, the bark contains condensed tannins in commercially available quantity (12.5%). Eco-friendly wood adhesives were obtained on a tannins basis. The bark left after polyphenols isolation can be used in soil melioration and as a sorbent for the removal of oil products from water surface. The investigation of the phenolic pool of grey alder could contribute to cluster technologies within the biorefinery-based bark processing.

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“…Compounds 12-17 were respectively identified as kaempferol-3-O-b-D-glucopyranoside (Kazuma et al, 2003), kaempferol-3-Ob-D-galattopyranoside (Lin et al, 2011), kaempferol-3-O-b-Darabinopyranoside (De Almeida et al, 1998, nicotiflorin (Kazuma et al, 2003), kaempferol-3-robinobioside (Cardoso et al, 2005) and kaempferol-3-neohesperidoside (Kazuma et al, 2003).…”

Section: Isolation and Determination Of Structurementioning

confidence: 99%

Phytochemical investigation and antimicrobial assessment of Bellis sylvestris leaves

Scognamiglio

Buommino

Coretti

et al. 2016

Phytochemistry Letters

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Flavonoid Glycosides from the Leaves of Machilus philippinensis

Abstract: Thirteen flavonoid glycosides (1-7, 11-13, 15, 17, and 18) were isolated from the EtOH extract of the leaves of Machilus philippinensis. Of these, kaempferol (2)

Cited by 21 publications

References 22 publications

Structural characterization and bioactivity of proanthocyanidins from indigenous cinnamon (Cinnamomum osmophloeum)

Structural characterization and bioactivity of proanthocyanidins from indigenous cinnamon (Cinnamomum osmophloeum)

Structure and antioxidant activity of diarylheptanoids extracted from bark of grey alder (Alnus incana) and potential of biorefinery-based bark processing of European trees

Phytochemical investigation and antimicrobial assessment of Bellis sylvestris leaves

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