• Journal of the Korean Chemical Society
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• v.35 no.6
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• pp.720-724
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• 1991

Simultaneous determination of chloragenic acid (CA), 3,4-o-dicafeoyl quinic acid(3,4-DCQA), 4,5-o-dicaffeoyl quinic acid (4,5-DCQA) and linarin in Chrysanthemum sibiricum Fisher was newly established by a reversed-phase high performance liquid chromatography (HPLC). Sample was extracted with 20 ml methanol for 4 hrs. The extract was cleaned up by using Sep-Pak $C_18$ cartridge and 4 ml methanol-$H_2$O(1 : 1) as eluent. Their determination was performed by means of RP-HPLC with Bondapak $C_18$ column (30 cm ${\times}$ 3.9 mm i.d., 10 ${\mu}m$ and gradient elution mode as methanol-5 mM $H_3PO_4$ solution (30 : 70). The established method was applied to various samples purchased. As a result, their content ranges showed to be 0.35~0.55% for CA, 0.46~0.76% for 3,5-DCQA, 0.077~0.23% for 4,5-DCQA and 0.16~2.72% for linarin, respectively.

• Korean Journal of Pharmacognosy
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• v.25 no.1
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• pp.11-19
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• 1994

Gleditsia japonica var. koraiensis NAKAI(Leguminosae) is commonly distributed in Korea and has been used as a folk medicine in the treatment of bronchitis, neoplasm and blennorrhgia in the Orient. The aqueous acetone extract of the leaves of G. japonica was subjected to a combination of Sephadex LH-20, Cosmosil $75C_{18}-OPN$, TSK-gel Toyopearl HW 40F, Avicel cellulose, and MCI-gel CHP 20P chromatographies with various solvent systems. Twelve compounds were isolated and confirmed to be vitexin(1), isovitexin(2), orientin(3), isoorientin(4), 4-caffeoyl quinic acid(5), 5-caffeoyl quinic acid(6), 3, 5-dicaffeoyl quinic acid(7), 4, 5-dicaffeoyl quinic acid(8), caffeic acid(9), quercetin(10), isoquercitrin(11) and luteolin-7-O-glucoside(12), on the basis of chemical and spectroscopic evidences.

• Korean Journal of Pharmacognosy
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• v.25 no.1
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• pp.70-72
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• 1994

From the herb of Artemisia princeps var. orientalis o-coumaric acid and 4,5-O-dicaffeoylquinic acid were isolated and identified by chemical and spectral analysis.

• Natural Product Sciences
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• v.10 no.6
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• pp.335-340
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• 2004

The chromatographic separation of the MeOH extract of the aerial parts from Aster hispidus (Compositae) led to the isolation of eight compounds. Their structures were established by spectroscopic methods to be ${\beta}-amyrin$ (1), oleanolic acid (2), (2R)-1, 2-O-(9Z, 12Z, $15Z-dioctadecatrienoyl)-3-O-{\beta}-D-galactopyranosyl\;glycerol$ (3), trans-phytol (4), 9, 12, 15-octadecatrienoic acid (5), kaempferol (6), 3,5-dicaffeoyl quinic acid (7), 3,4-dicaffeoyl quinic acid (8) and kaempferol-3-O-rutinoside (9). Compounds 1, $3{\sim}6$ and 9 showed non-specific moderate cytotoxicity against five human tumor cell lines $(5.44{\sim}23.51\;{\mu}g/ml)$. The other compounds were of marginal activity against tested five human cancer cell lines $(9.05{\sim}>30.0\;{\mu}g/ml)$.

• Korean Journal of Plant Resources
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• v.20 no.3
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• pp.221-225
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• 2007

The plant Ligularia fischeri var. spiciformis (Compositae) is a candidate for available functional foods. It has been used to treat diabetes mellitus and rheumatoid arthritis. We have reported the isolation of a new eremophilanolide named 6-oxoeremophilenolide and cytotoxic intermedeol together with the isolation of hydrophilic constituents, chlorogenic acid, 3,4-di-O-caffeoylquinic acie (3), and 5-O-[1-butyl]-3,4-di-O-caffeoylquinic acid. Compound 3 was again isolated by combination of silica gel- and ODS column chromatography for the anti-nociceptive action. Compound 3 and 4 were assayed in hot plate- and writhing tests in the rat. Although the three derivatives of caffeic acid exhibited significant anti-nociceptive effects at 10 mg/kg dose (i.p.),(activity potency: 4>3). These results suggest that compound 3 is responsible for at least rheumatoid arthritis, and caffeic acid moiety is the active moiety of dicaffeoylquinic acid.

• Proceedings of the PSK Conference
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• 2002.10a
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• pp.387.3-388
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• 2002

The plant Ligularia fischerivar. spiciformis(Compositae) is a candidate for available functional foods. It has been used to treat diabetes mellitus and rheumatoid arthritis. We have reported the isolation of a new eremophilanolide named 6-oxoeremophilenolide and cytotoxic intermedeol together with the isolation of hydrophilic constituents. chlorgenic acid. 3.4-di-O-caffeoylquinic acid(1). and 5-O-［1-butyl］-3.4-di-O-caffeoylquinic acid. (omitted)