Compounds > 1-1-diphenyl-2-picrylhydrazyl

1-1-diphenyl-2-picrylhydrazyl and pinoresinol

1-1-diphenyl-2-picrylhydrazyl has been researched along with pinoresinol* in 2 studies

Other Studies

2 other study(ies) available for 1-1-diphenyl-2-picrylhydrazyl and pinoresinol

Article	Year
Two new compounds isolated from Liriope muscari. Molecules (Basel, Switzerland), 2012, Jul-25, Volume: 17, Issue:8 Two new compounds, (2S,3R)-methyl 7-hydroxy-2-(4-hydroxy-3-methoxy-phenyl)-3-(hydroxymethyl)-2,3-dihydrobenzofuran-5-carboxylate (1) and (4R,5S)-5-(3-hydroxy-2,6-dimethylphenyl)-4-isopropyldihydrofuran-2-one (2), tentatively named norcurlignan and limlactone, respectively, were isolated from Liriope muscari, together with the known compound (-)-pinoresinol (3). The structures of these compounds were elucidated and characterized on the basis of 1D NMR, 2D NMR, CD and MS data. The in vitro antioxidant activities of compounds 1-3 were assessed by the DPPH and ABTS scavenging methods. Topics: Benzofurans; Benzothiazoles; Biphenyl Compounds; Chromatography, Gel; Free Radical Scavengers; Free Radicals; Furans; Lignans; Liriope Plant; Magnetic Resonance Spectroscopy; Medicine, Chinese Traditional; Molecular Conformation; Molecular Structure; Picrates; Sulfonic Acids	2012
[Studies on the chemical constituents of Pachysandra terminalis and their antioxidant activity]. Zhong yao cai = Zhongyaocai = Journal of Chinese medicinal materials, 2010, Volume: 33, Issue:5 To study the chemical constituents from Pachysandra terminalis and their antioxidant activity.. Chemical constituents were isolated by repeated column chromatography (silica gel, Toyopearl HW-40C and preparative HPLC). The structures of isolated compounds were elucidated on the basis of spectral data analysis. DPPH method was used to evaluate the free radical scavenging activity of the isolated compounds.. Six compounds were isolated and their structures were identified as follow: 2-Phenylethyl-beta-D-glucopyranoside (1), (+)Pinoresinol-4'-O-beta-D-glucopyranoside (2), Pinoresinol (3), cis-Syringin (4), 4-hydroxy-4-(3-oxo-l-butenyl)-3,5,5-trimethylcyclohex-2-en-l-one (5), 3alpha-hydroxy-5,6-epoxy-7-megastigmen-9-one (6). Compounds 2, 4, 5 showed obviously antioxidant activity, their DPPH free radical scavenging rates were 82.50%, 87.36%, and 84.56% on the concentration of 50 micromol/L, respectively.. Compounds 1-6 are isolated from this genus for the first time. Compounds 2, 4, and 5 showed significant antioxidant activities. Topics: Antioxidants; Biphenyl Compounds; Chromatography, High Pressure Liquid; Free Radical Scavengers; Furans; Glucosides; Glycosides; Lignans; Magnetic Resonance Spectroscopy; Molecular Structure; Pachysandra; Phenylethyl Alcohol; Phenylpropionates; Picrates; Plant Extracts; Plants, Medicinal	2010

Article

Year

Two new compounds isolated from Liriope muscari.

Molecules (Basel, Switzerland), 2012, Jul-25, Volume: 17, Issue:8

Two new compounds, (2S,3R)-methyl 7-hydroxy-2-(4-hydroxy-3-methoxy-phenyl)-3-(hydroxymethyl)-2,3-dihydrobenzofuran-5-carboxylate (1) and (4R,5S)-5-(3-hydroxy-2,6-dimethylphenyl)-4-isopropyldihydrofuran-2-one (2), tentatively named norcurlignan and limlactone, respectively, were isolated from Liriope muscari, together with the known compound (-)-pinoresinol (3). The structures of these compounds were elucidated and characterized on the basis of 1D NMR, 2D NMR, CD and MS data. The in vitro antioxidant activities of compounds 1-3 were assessed by the DPPH and ABTS scavenging methods.

Topics: Benzofurans; Benzothiazoles; Biphenyl Compounds; Chromatography, Gel; Free Radical Scavengers; Free Radicals; Furans; Lignans; Liriope Plant; Magnetic Resonance Spectroscopy; Medicine, Chinese Traditional; Molecular Conformation; Molecular Structure; Picrates; Sulfonic Acids

2012

[Studies on the chemical constituents of Pachysandra terminalis and their antioxidant activity].

Zhong yao cai = Zhongyaocai = Journal of Chinese medicinal materials, 2010, Volume: 33, Issue:5

To study the chemical constituents from Pachysandra terminalis and their antioxidant activity.. Chemical constituents were isolated by repeated column chromatography (silica gel, Toyopearl HW-40C and preparative HPLC). The structures of isolated compounds were elucidated on the basis of spectral data analysis. DPPH method was used to evaluate the free radical scavenging activity of the isolated compounds.. Six compounds were isolated and their structures were identified as follow: 2-Phenylethyl-beta-D-glucopyranoside (1), (+)Pinoresinol-4'-O-beta-D-glucopyranoside (2), Pinoresinol (3), cis-Syringin (4), 4-hydroxy-4-(3-oxo-l-butenyl)-3,5,5-trimethylcyclohex-2-en-l-one (5), 3alpha-hydroxy-5,6-epoxy-7-megastigmen-9-one (6). Compounds 2, 4, 5 showed obviously antioxidant activity, their DPPH free radical scavenging rates were 82.50%, 87.36%, and 84.56% on the concentration of 50 micromol/L, respectively.. Compounds 1-6 are isolated from this genus for the first time. Compounds 2, 4, and 5 showed significant antioxidant activities.

Topics: Antioxidants; Biphenyl Compounds; Chromatography, High Pressure Liquid; Free Radical Scavengers; Furans; Glucosides; Glycosides; Lignans; Magnetic Resonance Spectroscopy; Molecular Structure; Pachysandra; Phenylethyl Alcohol; Phenylpropionates; Picrates; Plant Extracts; Plants, Medicinal

2010