• Korean Journal of Plant Resources
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• v.9 no.1
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• pp.55-62
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• 1996

The caffeic acid, 4-O-$\beta$-D-glucopyranosyl caffeic acid, 4-O-$\beta$-D-glucopyranosyl-$\rho$-coumaric acid and 7-O-$\beta$-D-glucuronide of ($\pm$)-eriodictyol have been isolated from the root of Vitis thunbergii var. sinuata. The structures of compounds were determined by chemical and spectroscopic methods.

• YAKHAK HOEJI
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• v.34 no.4
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• pp.282-286
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• 1990

An hydrocarbon alcohol and steroids were isolated from the hexane fraction of the extract from the seeds of Phaseolus radiatus L. And also a flavonoid was identified from the ethyl acetate and butanol fraction. The structure of the obtained compound were elucidated by spectroscopic methods (UV, IR, mass and NMR) and their physicochemical properties. As the results, triacontanol, stigmasterol, ${\beta}-sitosterol$ and vitexin were identified.

• Archives of Pharmacal Research
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• v.12 no.3
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• pp.229-230
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• 1989

The reaction of (E)-2, 4-pentadienoic acid with aqueous bromine was reinvestigated to affirm the formation of (E)-5-bromo-4-hydroxy-2-pentenoic acid, whose structure was confirmed by the spectroscopic methods as well as the chemical modification.

• Archives of Pharmacal Research
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• v.24 no.5
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• pp.412-415
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• 2001

Along with five known triterpene glycosides, a new triterpene glucosyl ester, named crataegioside, was isolated from the roots of Rubus crataesifolius Bunge. The structure was established as ilexosapogenin A 28-O-$\beta$-D-glucopyranosyl ester by chemical and spectroscopic methods.

• Korean Journal of Pharmacognosy
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• v.30 no.1
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• pp.84-86
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• 1999

From the ethyl acetate fraction of the methanol extract of the fruits of Opuntia ficus-indica var. saboten, two dihydroflavonois were isolated and identified as (+)-trans-dihydrokaempferol (1) and (+)-trans-dihydroquercetin (2) by spectroscopic methods.

• Natural Product Sciences
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• v.3 no.1
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• pp.8-10
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• 1997

A new flavonol glycoside, quercetin 3-rhamnosyl $(1{\rightarrow}3)$ galactoside [5] was isolated from the leaves of M. africana. The known compounds kaempferol 3-rutinoside [1], 3'-O-methylquercetin 3-rutinoside [2], quercetin 3-rutinoside [3], and quercetin 3-rhamnosyl $(1{\rightarrow}6)$ galactoside [4] were also isolated for the first time from this plant. Their structures were determined by chemical and spectroscopic methods.

• Korean Journal of Pharmacognosy
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• v.21 no.1
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• pp.49-51
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• 1990

From tire root bark of Accnthopanax koreanum a new diterpene glycoside, mp $212{\sim}214^{\circ}$, was isolated. The structure was established as 15(R),16-dihydroxypimar-9(11)-ene-19-oic acid ${\beta}$-D-glucopyranosyl ester (sumogaside) oil the basis of spectroscopic methods and chemical transformation.

• Korean Journal of Pharmacognosy
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• v.21 no.3
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• pp.201-204
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• 1990

From the Cortex of Ulmus davidiana var. japonica three triterpenoids were isolated and identified as friedelin, epifriedelanol and taraxerol on the basis of spectroscopic methods.

• Korean Journal of Pharmacognosy
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• v.28 no.3
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• pp.143-148
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• 1997

From the root of Symplocarpus renifolius, four compounds were isolated and their structure was elucidated by chemical and spectroscopic methods. They were identified as ${\beta}-sitosterol$ (compound 1), asparagine (compound 2), isocorydine (compound 3) and 3-hydroxymethyl-4-phenyl phenoxy carboxylic acid glucopyranosyl ester (compound 4). These compounds were firstly isolated from roots of Symplocarpus renifolius. Compound 4 was identified as a new compound, named as symplocarposide.

• Korean Journal of Pharmacognosy
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• v.24 no.1
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• pp.26-31
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• 1993

Four flavonoids were isolated from the ether and ethylacetate extracts of Impatiens textori Miquel(Balsaminaceae). The structures were elucidated as luteolin(I), apigenin(II), chrysoeriol(III), and chrysoeriol 7-glucoside(IV) by physico-chemical and spectroscopic methods. These compounds were isolated from this plant for the first time.