• Title/Summary/Keyword: phytochemical constituents

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Phytochemical Constituents from Metasequoia glyptostroboids Leaves

  • Duan, Chao Hui;Lee, Jung-Noh;Lee, Chung-Mong;Lee, Ghang-Tai;Lee, Kun-Kook
    • Natural Product Sciences
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    • v.15 no.1
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    • pp.12-16
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    • 2009
  • Phytochemical investigation of Metasequoia glyptostroboids leaves resulted in the isolation of ten compounds. The structures were determined to be isoquercitrin (1), quercitrin (2), myricitrin (3), amentoflavone (4), sciadopitysin (5), isoginkgetin (6), 2,3-dihydrosciadopitysin (7), 2,3-dihydroisoginkgetin (8), $3{\beta}$-acetoxy-8(17),13E-labdadien-15-oic acid (9) and $\beta$-sitosterol (10) by spectroscopic analyses. Isoquercitrin (1) was isolated from this plant for the first time.

Phytochemical Constituents of the Leaves of Hosta longipes

  • Kim, Chung Sub;Kim, Ki Hyun;Lee, Kang Ro
    • Natural Product Sciences
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    • v.20 no.2
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    • pp.86-90
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    • 2014
  • Phytochemical investigation of the 80% MeOH extract from the leaves of Hosta longipes resulted in the isolation of sixteen compounds (1 - 16). The structures of the compounds were elucidated by spectroscopic methods to be methyl 10,10-dimethoxydecanoate (1), methyl 10-hydroxy-8E,12Z-octadecadienoate (2), methyl coriolate (3), trans-phytol (4), phytene-1,2-diol (5), phyton (6), (3S,5R,6S,7E,9R)-7-megastigmene-3,6,9-triol (7), (3S,5R,6S,9R)-3,6,9-trihydroxymegastigman-7-ene (8), shikimic acid (9), p-coumaramide (10), trans-N-p-coumaroyltyramine (11), cis-N-coumaroyltyramine (12), tryptophan (13), thymidine (14), adenosine (15), and deoxyadenosine (16). Compound 1 was synthesized, but not yet isolated from natural source, and compounds 2-16 were isolated for the first time from this plant source.

Chemical Constituents of Nelumbo nucifera Seeds

  • Rho, Taewoong;Yoon, Kee Dong
    • Natural Product Sciences
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    • v.23 no.4
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    • pp.253-257
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    • 2017
  • The phytochemical study for the extract of Nelumbo nucifera (Nymphaceae) seeds has led to the isolation of ten compounds including five simple phenolic compounds, two indole derivatives, a flavonoid glycoside, two abscisic acid derivatives. The interpretation of 1D and 2D NMR and ESI-Q-TOF-MS spectroscopic data revealed the chemical structures of isolates to be p-hydroxybenzoic acid (1), protocatechuic acid (2), (E)-p-coumaric acid (3), (E)-ferulic acid (4), (E)-sinapate-4-O-${\beta}$-$\text\tiny{D}$-glucopyranoside (5), tryptophan (6), 3-indoleacetic acid (7), isoschaftoside (8), dihydrophaseic acid (9), dihydrophaseic acid 3'-O-${\beta}$-$\text\tiny{D}$-glucopyranoside (10). To the best of our knowledge, 1 - 5 and 7 were identified for the first time from N. nucifera seeds, and the presence of dihydrophaseic acid (9) and its glucoside (10) were demonstrated secondly in this plant.

Phytochemical Constituents of Synurus excelsus (큰수리취의 식물화학적 성분연구)

  • Nam, Jung-Hwan;Choi, Sang-Zin;Lee, Kang-Ro
    • Korean Journal of Pharmacognosy
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    • v.35 no.2 s.137
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    • pp.116-121
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    • 2004
  • Seven compounds, euscaphic acid (1), nepehinol (2), ursolic acid (3), phytol (4), ${\beta}-amyrin$ (5), scopoletin (6), and rutin (7) were isolated from the aerial parts of Synurus excelsus which has been used as Korean traditional medicine to treat rheumatic arthritis and dysmenorrhea. Their structures were established by chemical and spectroscopic methods. All compounds were isolated for the first time from this plant.

Constituents of the Aerial Parts of Lonicera etrusca Growing in Saudi Arabia

  • Alqasoumi, Saleh I.;Al-Rehaily, Adnan J.;Abdel-Kader, Maged S.
    • Natural Product Sciences
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    • v.15 no.3
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    • pp.121-124
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    • 2009
  • Phytochemical investigation of the aerial parts of Lonicera etrusca resulted in the isolation of three iridoids including two aglycones, loganin aglycone (log-1) (1) and lonicerin (log-2) (2), and the known common glycoside loganin (4). The study also afforded a coumarin derivative, 7-hydroxycoumarin (3), and a flavonoid glycoside, luteolin-7-O-$\beta$-D-glucoside (5). The structures were determined utilizing physical, chemical and spectral methods.

Phytochemical Constituents from the Fruits of Acanthopanax sessiliflorus

  • Lee, Sanghyun;Kim, Bak-Kwang;Cho, Seon-Haeng;Shin, Kuk-Hyun
    • Archives of Pharmacal Research
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    • v.25 no.3
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    • pp.280-284
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    • 2002
  • Six compounds were isolated from the fruits of Acanthopanax sessiliflorus. Their structures were elucidated as (-)-sesamin, scoparone, protocatechuic acid, ursolic acid, hyperin and 5-hydroxymethylfurfural by physicochemical and spectroscopic analysis. Among them, scoparone, ursolic acid and 5-hydroxymethylfurfural were isolated for the first time from Acanthopanax species.

Phytochemical Constituents of Cirsium nipponicum (MAX.) Makino (울릉엉겅퀴의 식물화학적 성분연구)

  • Lee, Jong-Hwa;Lee, Kang-Ro
    • Korean Journal of Pharmacognosy
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    • v.36 no.2 s.141
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    • pp.145-150
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    • 2005
  • Nine compounds were isolated from the methanol extract of the aerial parts of Cirsium nipponicum. Their structures were identified to be phytene-1,2-diol (1), ${\beta}-sitosterol$ (2), pectolinarigenin (3), epilupeol acetate (4), 9,12-octadecadienoic acid (5), pinoresinol (6), apigenin (7), linaroside (8) and siparunoside (9) by spectroscopic means.