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KMID : 0043320080310121578
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Archives of Pharmacal Research
2008 Volume.31 No. 12 p.1578 ~ p.1583
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Triterpenoic Acids of Prunella vulgaris var. lilacina and Their Cytotoxic Activities In Vitro
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Lee Kang-Ro
Hong Jong-Ki
Kim Kyung-Ran
Lee Je-Hyun
Kim Do-Hoon
Lee Il-Kyun
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Abstract
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The column chromatographic separation of the MeOH extract from the aerial parts of Prunella vulgaris var. lilacina Nakai led to the isolation of fifteen triterpenoic acids (2-6, 9-13, 16-20), four flavonoids (14, 21-23), four phenolics (7, 8, 15, 24), and a diterpene (1). Their structures were determined by spectroscopic methods to be trans-phytol (1), oleanic acid (2) ursolic acid (3), 2α,3α,19α-trihydroxyurs- 12en-28oic acid (4), 2α,3α-dihydroxyurs-12en-28oic acid (5), maslinic acid (6), caffeic acid (7), phydroxy cinnamic acid (8), 2α,3α,19α,23-tetrahydroxyurs-12en-28oic acid (9), 2α,3α,23-trihydroxyurs- 12en-28oic acid (10), 2α,3β-dihydroxyurs-12en-28oic acid (11), 2α,3β,24-trihydroxyolea-12en-28oic acid (12), (12R, 13S)-2α,3α,24,trihydroxy-12,13-cyclo-taraxer-14-en-28oic acid (13), quercertin 3-O-β- D-glucopyranoside (14), rosmarinic acid (15), 2α,3α,24-trihydroxyurs-12,20(30)-dien-28oic acid (16), 2α,3α,24-trihydroxyolea-12en-28oic acid (17), 2α,3β,19α,24-tetrahydroxyurs-12en-28oic acid 28-O-Dglucopyranoside (18), 2α,3α,19α,24-tetrahydroxyurs-12en-28oic acid 28-O-D-glucopyranoside (19), prunvuloside A (20), kaempferol 3-O-α-L-rhamnopyranosyl(1→6)-β-D-glucopranoside (21), kaempferol 3-O-β-D-glucopyranoside (22), quercertin 3-O-α-L-rhamnopyranosyl(1→6)-β-D-glucopyranoside (23), and 2-hydroxy-3-(3’,4’-dihydroxyphenly)propanoic acid (24). Compounds 1, 8-12, 17, 21, 23, and 24 were isolated from this plant source for the first time. The isolated compounds were evaluated for their cytotoxicity against A549, SK-OV-3, SK-MEL-2, and HCT15 cells in vitro using the sulforhodamin B bioassay (SRB) method. Compound 3 exhibited moderate cytotoxic activity against A549, SK-OV-3, SK-MEL-2, and HCT15 cells, with ED50 values of 3.71, 3.65, 13.62, and 5.44 μM, respectively.
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KEYWORD
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Prunella vulgaris var.lilacina, Triterpenoic acid, Cytotoxicity
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