• 약학회지
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• 제41권2호
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• pp.149-152
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• 1997

Three compounds were isolated from the n-BuOH fraction of buds of Eugenia caryophyllata and their structures were identified as 3,3',4-tri-O-methylellagic acid, 3-O--${\beta}$ -D-glucopyranosyl-3,5,4'-trihydroxy-7,3'-dimethoxyflavone and gallic acid by chemical and spectral evidence.

• Archives of Pharmacal Research
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• 제15권1호
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• pp.62-68
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• 1992

From the roots of Caragana sinica (Buc'hoz) Rehder (Leguminosae), a new saponin named caraganoside A was isolated and elucidated as 3-0-$\beta$-D-xylopyranosyl (1$\rightarrow$2)-[$\beta$-D-glucopyranosyl (1$\rightarrow$3)]-$\alpha$-L-arabinopyranosyl oleanolic acid 28-O-[$\beta$-D-glucopyranosyl ester by means of chemical and spectral studies. Kalopanax-saponin F, hemsloside Ma3 and araloside A were also isolated and characterized. The former two compounds were separated as their methylesters.

• Natural Product Sciences
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• 제11권2호
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• pp.75-78
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• 2005

A new acetophenone named rumexin $(3-hydroxy-5-methyl-4-O-{\beta}-D-glucopyranosyl\;acetophenone)$ was isolated from methanolic extract of Rumex aquatica together with eight known compounds, $quercetin-3-O-{\beta}-D-glucuropyranoside$, $musizin-8-O-{\beta}-D-glucopyranoside$, $quercetin-3-O-{\alpha}-L-rhamnoside$, $emodin-8-O-{\beta}- D-glucopyranoside$, caffeic acid, $1-O-caffeoyl-{\beta}-D-glucopyranoside$, 1-methyl caffeic acid, $kaempferol-3-O-{\beta}-D-glucuropyranoside$. All of the above compounds were isolated from Rumex aquatica for the first time, and structures of compounds were established by spectroscopic means.

• 생약학회지
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• 제33권1호통권128호
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• pp.1-4
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• 2002

The phytochemical study of the underground parts of Gardenia jasminoides var. radicans Makino (Rubiaceae) led to the isolation of five coumarins. On the basis of spectroscopic evidences, the structures of these compounds were charaterized as ferulic acid(l), 5,8-di-(3-methyl-2,3-dihydroxybutyloxylpsoralen)(2), skimmin(3), uracil(4), $3-0-{\alpha}-D-glucopyranosyl-(1{\rightarrow}4)-{\beta}-D-glucopyranosyloxypeucedanin$ hydrates(5), respectively.

• 생약학회지
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• 제22권3호
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• pp.156-161
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• 1991

Four furocoumarins and two dihydrofuranocoumarin glycosides have been isolated from the benzene-soluble and butanol-soluble portions of the roots of Ostericum koreanum Kitagawa, respectively. Four furocoumarins have been determined as imperatorin, isoimperatorin, oxypeucedanin and oxypeucedanin hydrate, and two dihydrofuranocoumarin glycosides determined as marmesinin and $4'-O-{\beta}-D-glucopyranosyl-3'-hydroxymarmesin$ on the basis of spectral data and physico-chemical evidence.

• 한국생명과학회:학술대회논문집
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• 한국생명과학회 2003년도 제39회 학술심포지움
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• pp.23-37
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• 2003

A novel inhibitor against maltose-producing a-amylase was prepared via stepwise degradation of a high molecular weight acarbose (HMWA) using Thermus maltogenic amylase (ThMA). The structure of the purified inhibitor was determined to be ${\alpha}$-D-glucopyranosyl-${\alpha}$-acarviosinyl-D-glucopyranose (GlcAcvGlc). Progress curves of p-nitrophenyl-${\alpha}$-D-maltoside (PNPG2) hydrolysis by various amylolytic enzymes, including maltogenase (MGase), ThMA, and cyclodextrinase(CDase) I-5, in the presence of acarbose or GlcAcvGlc indicated a slow-binding mode of inhibition. The inhibition potency of GlcAcvGlc for MGase, ThMA, and CDase I-5 was 3 orders of magnitude higher than that of acarbose.

• Archives of Pharmacal Research
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• 제25권5호
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• pp.621-624
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• 2002

From the leaves of Brassica juncea, a new rare kaempferol 7-Ο-triglucoside isolated and characterized as kaempferol 7-Ο-$\beta$-D-glucopyranosyl-(1longrightarrow3)-[$\beta$-D-glucopyranosyl-(1longrightarrow6)]-glucopyranoside (1) based on the spectroscopic evidences. This compound was found to be a scavenger of 1, 1-diphenyl-2-picrylhydrazyl radical.

• Applied Biological Chemistry
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• 제39권6호
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• pp.512-516
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• 1996

Sophorose $(2-O-{\beta}-glucopyranosyl-D-glucopyranose)$를 2분자의 D-glucopyranose로부터 6단계의 화학반응과정을 통하여 21%의 수율로 합성하는 방법을 확립하였다. Sophorose 및 얻어진 중간생성물들에 대하여 NMR, IR 등의 스펙트럼 데이타를 해석하여 구조를 확인하였다.

• Archives of Pharmacal Research
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• 제20권2호
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• pp.194-196
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• 1997

A C-glycosyl chromone, named as 7-O-methylaloesinol, was newly isolated from the leaf exudate of Aloe capensis and identified as $8-C-{\beta}-D-glucopyranosyl$${\beta}-2-[2-(R)-hydroxypropyl]-7-methoxy-5-methyl-4H-1-benzopyran-4-one$ by chemical and spectral evidence.

• 약학회지
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• 제44권4호
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• pp.334-339
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• 2000

The present study was carried out to evaluate biologically active components of the rhizomes of Sparganium stoloniferum and to supply the preliminary data for the chemotaxonomy and the medicinal application. Extraction and systematic fractionation of the rhizomes by column chromatography led to the isolation of six compounds from ethylacetate and n-butanol soluble fractions. Elucidation of the chemical structures of these compounds by physicochemical and apectral analysis demonstrated that compound I,II ,III,IV,V and Ⅵ were $\beta$-sitosterol, $\beta$-sitosterol-3-$\beta$-D-glucuronopyranoside, 3- (4-hydroxyphenyl)-2-propenoic acid, sorbose, 1-O-$\beta$-D-glucopyranosyl-(2S, 3R, 4E, 8Z)-2-[(2(R)-hydroxyeicosanoyl)amido]-4,8-octadecadiene-1,3-diol, and $\beta$-sitosterol-3-O-$\beta$-D-glucopyranoside, respectively.