• Title/Summary/Keyword: ${\beta}-sitosterol-{\beta}-D-glucoside$

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Phytochemical Studies on Reynoutriae Radix $('H\check{u}-Zh\grave{a}ng')$

  • Chi, Hyung-Joon;Kim, Hyun-Soo
    • Korean Journal of Pharmacognosy
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    • v.17 no.1
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    • pp.73-77
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    • 1986
  • Anthraquinones, physcion (I), mp $204{\sim}205^{\circ}$ and emodin (II), mp $254{\sim}255^{\circ}$, and $emodin-8-O-{\beta}-{_D}-glucoside$ (IV), mp $191{\sim}192^{\circ}$ together with ${\beta}-sitosterol$ glucoside (III), mp $280{\sim}282^{\circ}$ were isolated from the roots of Polygonum ellipticum Migo and P. sachalinense Fr. Schm. (Polygonaccae). Stilbene derivatives, 3,5,4'-trihydroxystibene (V), mp $258{\sim}260^{\circ}$ and $3,5,4'-trihydroxystilbene-3-O-{\beta}-{_D}-glucoside$ (VI), mp $142{\sim}144^{\circ}$ were also isolated.

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Acylucosyl Sterols from the Roots of Caragana chamlagu (골담초근의 Lipid성분에 관한 연구)

  • Cho, Young-Kyung;Lee, Myung-Whan;Kang, Hyun-Mo;Lee, Han-Koo;Kang, Sam-Sik
    • Korean Journal of Pharmacognosy
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    • v.23 no.1
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    • pp.14-19
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    • 1992
  • A mixture of acylglucosyl sterols together with ${\beta}-sitosterol$, ${\beta}-sitosterol\;3{\beta}-O-glucoside$ and fatty acids was isolated from the roots of Caragana chamlagu as their acetate forms and the structure elucidated by chemical and spectroscopic means. The major acylglucosyl sterol was ${\beta}-sitosteryl\;3-O-[6'-O-oleoyl]-{\beta}-D-glucopyranoside$ while the minor components were $6'-O-palmitoyl-\;and\;6'-O-stearoyl-{\beta}-D-glucosyl$ sitosterol congeners. The isolation and structure elucidation of these acylglucosyl sterols are reported for the first time from the genus Caragana.

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Nitrite Scavenging Ability and SOD-like Activity of a Sterol Glucoside form Chrysanthemum coronarium L. var. spatiosum (쑥갓 스테롤배당체의 아질산염소거작용 및 SOD 유사활성)

  • Cho, Min-Jung;Park, Mi-Jung;Lee, Heum-Sook
    • Korean Journal of Food Science and Technology
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    • v.39 no.1
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    • pp.77-82
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    • 2007
  • From the total methanolic extract of Chrysanthemum coronarium L. var. spatiosum (Compositae), nitrite scavenging ability and superoxide dismutase (SOD)-like activity were analyzed as antioxidative characteristics. After successive partitioning with chloroform, n-butanol, and water, the chloroform fraction showed the most significant nitrite scavenging ability with an $IC_{50}$ value of 39 ppm compared with the values of vitamin C and chlorogenic acid, 15 ppm and 36 ppm, respectively. The active fraction was subjected to silica gel and Sephadex LH-20 column chromatography, and the compound was isolated and identified as ${\beta}-sitosterol-O-{\beta}-D-glucoside$ using $^{1}H-NMR$ and $^{13}C-NMR$ spectral data. The glucoside was further hydrolyzed and confirmed as a glycosylated ${\beta}-sitosterol$. The compound and its aglycone, ${\beta}-sitosterol$, showed different nitrite scavenging and SOD-like activity. The $IC_{50}$ value of nitrite scavenging ability of the compound was 335 ppm at pH 1.5, while that of its aglycone was 41 ppm. As for the SOD-like activity, the $EC_{50}$ values of the sterol and the glucoside were 1,291 ppm and >2,000 ppm, respectively, compared with those of vitamin C and chlorogenic acid, 38 ppm and 449 ppm, respectively.

Phytochemical Investigation of the Leaves of Flaveria trinervia

  • Umadevi, S.;Mohanta, G.P.;Balakrishna, K.;Manavalan, R.
    • Natural Product Sciences
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    • v.11 no.1
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    • pp.13-15
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    • 2005
  • Phytochemical study of the methanolic extract of Flaveria trinervia (Asteraceae) leaves has led to the isolation of three constituents characterised as 3,5,7,4' tetrahydroxy-6-methoxy flavone (6-methoxy kaempferol), oleanolic acid and ${\beta}-sitosterol-{\beta}-D-glucoside$. The identities of the compounds were confirmed by the physical and spectroscopic data and by comparison with authentic samples.

Cardenolides and ${\beta}$-Sitosterol Glucoside from Pergularia tomentosa L. (Pergularia tomentosa L.로부터의 카르데노리드와 ${\beta}$-시토스테롤 글루코사이드)

  • Gohar, Ahmed A.;El-Olemy, M.M.;Abdel-Sattar, Essam;El-Said, M.;Niwa, M.
    • Natural Product Sciences
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    • v.6 no.3
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    • pp.142-146
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    • 2000
  • The aerial parts of Pergularia tomentosa L. afforded three cardenolides, desglucouzarin, coroglaucigenin and uzarigenin, in addition to ${\beta}$-sitosterol$glucoside. The isolated compounds were identified by physical and spectral means, including IR, UV, $$[{\alpha}]_D$, 1D-, 2D-NMR and FAB-MS experiments. The cardenolides, ghalakinoside, calactin and pergularoside previously reported from roots, were also identified in the aerial parts.

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Chemical Constituents of Gomphrena globosa. II

  • Dinda, Biswanath;Ghosh, Biplab;Achari, Basudev;Arima, Shiho;Sato, Nariko;Harigaya, Yoshihiro
    • Natural Product Sciences
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    • v.12 no.2
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    • pp.89-93
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    • 2006
  • One new sterol glucoside, $gomphsterol\;{\beta}-D-glucoside$ 1 along with known compounds, ${\beta}-sitosterol$, stigmasterol, campesterol, $stigmasterol-{\beta}-D-glucoside$, friedelin, 3-epi-friedelinol, allantoin, and $chrysoeriol-7-O-{\beta}-D-glucoside$ have been isolated from the aerial parts of Gomphrena globosa (Amaranthaceae). On the basis of spectroscopic (including 2D NMR) and chemical studies, the structure of 1 was elucidated as $(22E,24S)-24-ethylcholesta-7,9(11),22-trien-3{\beta}-ol-3-O-{\beta}-D-glucopyranoside$. Known compounds are reported for the first time from this plant species.

Phytochemical Studies on Epimedii Herba (II)$^1$ -Studies on the Underground Parts of Epimedium koreanum- (음양곽의 성분에 관한 연구(II)$^1$ -삼지구엽초 지하부의 성분-)

  • Kang, Sam-Sik;Kim, Ju-Sun;Kang, Yoon-Jung;Han, Hye-Kyoung
    • Korean Journal of Pharmacognosy
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    • v.21 no.1
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    • pp.56-59
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    • 1990
  • n-Alkanes (n-nonacosane and n-hentriacontane), phytosterols (campesterol and ${\beta}$-sitosterol) and phytosteryl glucosides (${\beta}$-sitosterol 3-O-${\beta}$-D-glucopyranoside and campesterol 3-O-${\beta}$-D-glucopyranoside) were isolated from the underground parts of Epimedium koreanum (Berberidaceae) and characterized by spectral data.

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Chemical Components of the Root of Veronicastrum sibiricum Pennell (냉초(冷草)의 화학성분(化學成分) 연구(硏究))

  • Lee, Sook-Youn;Yu, Seung-Jo;Chi, Hyung-Joon
    • Korean Journal of Pharmacognosy
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    • v.18 no.3
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    • pp.168-176
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    • 1987
  • Veronicastrum sibiricum (L.) Pennell (Scrophulariaceae) is a perennial herb growing in moist land. It has been used as a korean folk medicine in treating common cold, leucorrhea, cystitis and liver damage and as cholagogue. The present study dealt with the elucidation of the chemical components. From the roots of the plant, five iridoids were isolated and identified as minecoside $(mp\;142{\sim}3^{\circ})$, 6-O-veratryl catalpol ester $(mp\;216{\sim}8^{\circ})$, catalpol $(mp\;204{\sim}6^{\circ})$, aucubin $(mp\;180{\sim}2^{\circ})$ and 6-desoxy-8-isoferuloyl harpagide $(mp\;139{\sim}41^{\circ})$. Furthermore, ${\beta}-sitosteryl-3-O-D-glucoside$, campesteryl 3-O-D-glucoside, ${\beta}-sitosterol$, campesterol, stigmasterol and mannitol were also isolated.

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Studies on the Constituents of Oldenlandia diffusa (백화사설초(百花蛇舌草)의 성분(成分)에 관한 연구(硏究))

  • Kim, Young-Hee
    • Korean Journal of Medicinal Crop Science
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    • v.3 no.2
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    • pp.91-95
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    • 1995
  • From the whole plants of Oldenlandia diffusa ursolic acid together with sterols, ${\beta}-sitosterol$ and its $3-0-{\beta}-D-glucoside$ were isolated and characterized mainly by means of spectroscopic methods. Based on the present findings, it may be considered that this plant may contribute to be a rich source for ursolic acid.

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Growth Inhibition of Toxic Cyanobacterium Microcystis aeruginosa, Using Rice Hull Methanolextracts (왕겨 메탄을 추출물을 이용한 독성 남조 Microcystis aeruginosa의 성장 억제)

  • Park, Myung-Hwan;Chung, Ill-Min;Kim, Baik-Ho;Hwang, Soon-Jin
    • Korean Journal of Ecology and Environment
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    • v.41 no.spc
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    • pp.99-106
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    • 2008
  • We examined the effects of crude and eight pure material (${\beta}$-sitosterol, ${\beta}$-sitosterol-${\beta}$-D-glucoside, 1-tetratriacontanol, hentriacontane, orizaterpenoid, stigmas-5-en-$3{\alpha}$ 26-diacetate, stearic acid, myristic acid), extracted from rice hull, on growth inhibition of toxic cyanobacterium, Microcystis aeruginosa NIER 10010. Strains of M. aeruginosa and Daphnia magna, obtained from the NIER (Korea) and BBE (Germany), were cultured in the CB medium with hard water. For all four treatment concentrations 0, 10, 100 and $1,000{\mu}g\;L^{-1}$) of the crude extract, the cell number of M. aeruginosa was reduced by $59{\sim}73%$ during the 7-day test period. Among eight kinds of pure extracts, ${\beta}$-sitosterol-${\beta}$-D-glucoside, hentriacontane and orizaterpenoid $(1,000{\mu}g\;L^{-1})$ exhibited relatively higher growth inhibition compared with other pure extracts. The mixture of three pure extracts (${\beta}$-sitosterol-${\beta}$-D-glucoside, hentriacontane and orizaterpenoid) showed the highest growth inhibition at $1,000{\mu}g\;L^{-1}$. Therefore, the synergistic effect was significantly highlighted by a mixture of the three pure extracts (p<0.05). Under the condition of $1,000{\mu}g\;L^{-1}$ in the crude extracts, D. magna exhibited survival rate by >85% for 96 hours. In conclusion, the growth inhibition of M. aeruginosa was probably attributed to the synergistic effect of various compounds extracted from the rice hull.