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Dr. Duke's Phytochemical and Ethnobotanical Databases
U.S. Department of Agriculture
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Xanthine-Oxidase-Inhibitor

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List of activity chemicals.
Click on column headings to sort table by that column. *Unless otherwise noted all references are to (Duke, 1992)
Chemical Name Dosage Reference
(+)-CATECHIN Mills, Simon and Bone, Kerry. 2000. Phytotherapy. Churchill
Livinston, Edinburgh.
(-)-EPICATECHIN IC50=>40 Hatano, T., Yasuhara, T., Yoshihara, R., Agata, I., Noro, T., and Okuda, T. 1989. Effects of Interaction of Tannins with Co-existing Substances.VII. Inhibitory Effects of Tannins Related Polyphenols on Xanthine Oxidase. Chem. Pharm. Bull. 38(5): 1224-1229
(-)-EPIGALLOCATECHIN IC50=>40 Hatano, T., Yasuhara, T., Yoshihara, R., Agata, I., Noro, T., and Okuda, T. 1989. Effects of Interaction of Tannins with Co-existing Substances.VII. Inhibitory Effects of Tannins Related Polyphenols on Xanthine Oxidase. Chem. Pharm. Bull. 38(5): 1224-1229
(-)-EPIGALLOCATECHIN-GALLATE IC50=>40 Hatano, T., Yasuhara, T., Yoshihara, R., Agata, I., Noro, T., and Okuda, T. 1989. Effects of Interaction of Tannins with Co-existing Substances.VII. Inhibitory Effects of Tannins Related Polyphenols on Xanthine Oxidase. Chem. Pharm. Bull. 38(5): 1224-1229
(1'S)-1'-ACETOXYCHAVICOL-ACETATE *
(Z,E)-2-(3,4-DIHYDROXYPHENYL)-ETHENYL-ESTER IC50=0.021 ug/ml Chem. & Pharm. Bull. 38: 1772.
(Z,E)-2-(3,5-DIHYDROXYPHENYL)-ETHENYL-ESTER IC50=0.124 ug/ml Chem. & Pharm. Bull. 38: 1772.
1,2,3,6-TETRA-O-GALLYOL-BETA-D-GLUCOSE IC50=12 uM Hatano, T., Yasuhara, T., Yoshihara, R., Agata, I., Noro, T., and Okuda, T. 1989. Effects of Interaction of Tannins with Co-existing Substances.VII. Inhibitory Effects of Tannins Related Polyphenols on Xanthine Oxidase. Chem. Pharm. Bull. 38(5): 1224-1229
1,2,6-TRI-O-GALLOYL-BETA-D-GLUCOSE IC50=39 uM Hatano, T., Yasuhara, T., Yoshihara, R., Agata, I., Noro, T., and Okuda, T. 1989. Effects of Interaction of Tannins with Co-existing Substances.VII. Inhibitory Effects of Tannins Related Polyphenols on Xanthine Oxidase. Chem. Pharm. Bull. 38(5): 1224-1229
1,3,4,6-TETRA-O-GALLOYL-BETA-D-GLUCOSE IC50=8 uM Hatano, T., Yasuhara, T., Yoshihara, R., Agata, I., Noro, T., and Okuda, T. 1989. Effects of Interaction of Tannins with Co-existing Substances.VII. Inhibitory Effects of Tannins Related Polyphenols on Xanthine Oxidase. Chem. Pharm. Bull. 38(5): 1224-1229
3,5-DI-O-CAFFEOYLQUINIC-ACID IC50=34 uM Hatano, T., Yasuhara, T., Yoshihara, R., Agata, I., Noro, T., and Okuda, T. 1989. Effects of Interaction of Tannins with Co-existing Substances.VII. Inhibitory Effects of Tannins Related Polyphenols on Xanthine Oxidase. Chem. Pharm. Bull. 38(5): 1224-1229
3-O-GALLOYLEPICATECHINS IC50=4-7 Hatano, T., Yasuhara, T., Yoshihara, R., Agata, I., Noro, T., and Okuda, T. 1989. Effects of Interaction of Tannins with Co-existing Substances.VII. Inhibitory Effects of Tannins Related Polyphenols on Xanthine Oxidase. Chem. Pharm. Bull. 38(5): 1224-1229
AESCULETIN IC52=10 uM *
ALLICIN 500 uM LAWSON in Koch, H. P. and Lawson, L. D., eds. 1996. Garlic- The
Science and therapeutic application of Allium sativum L. and related species. Williams & Wilkins, Baltimore. 329 pp.
ALLOPURINOL 0.021 ug/ml *
ALLOPURINOL IC50=0.17 uM Hatano, T., Yasuhara, T., Yoshihara, R., Agata, I., Noro, T., and Okuda, T. 1989. Effects of Interaction of Tannins with Co-existing Substances.VII. Inhibitory Effects of Tannins Related Polyphenols on Xanthine Oxidase. Chem. Pharm. Bull. 38(5): 1224-1229
APIGENIN 0.36 uM *
ASTRAGALIN-2''-GALLATE 50 uM *
ASTRAGALIN-6''-GALLATE 50 uM *
ATHYRIOL Jeffery B. Harborne and H. Baxter, eds. 1983. Phytochemical Dictionary. A Handbook of Bioactive Compounds from Plants. Taylor & Frost, London. 791 pp.
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List of Activity Plants.
Click on column headings to sort table by that column.
Plant Name Common Name Chemical Count Total Parts Per Million
Vaccinium vitis-idaea Cowberry; Lingen; Lingonberry 8 610, 500
Valeriana officinalis Valerian; Common Valerian; Garden-Heliotrope 3 17, 400
Vanilla planifolia Vanilla; Bourbon Vanilla 3 0
Verbena officinalis Vervain 2 10, 000
Veronica officinalis Common Speedwell; Gypsyweed 1 0
Viburnum opulus Crampbark; European Cranberry Bush; Guelder Rose; Snowballbush 6 120, 000
Viburnum prunifolium Black Haw 4 20, 000
Vicia faba Broadbean; Faba Bean; Habas 3 0
Vigna mungo Black Gram 1 1.2999999523162842
Vigna radiata Green Gram; Mungbean 3 32.010000467300415
Vigna unguiculata Cowpea; Black-eyed Pea; Crowder Pea; Southern Pea 2 130.69999599456787
Vinca minor Periwinkle; Running-Myrtle 1 0
Viola odorata Common Violet; Sweet Violet 1 0
Viola tricolor Pansy; Wild Violet 2 0
Viscum album European Mistletoe 1 0
Vitex agnus-castus Chaste-Tree 1 0
Vitis vinifera Grape; European Grape; Wine Grape; Grapevine; Vigne Vinifere (Fr.); Weinrebe (Ger.); Parra (Sp.); Vid (Sp.) 15 5, 505.840000033379
Warburgia ugandensis Warburghia 1 0
Withania somnifera Ashwagandha 1 0
Yucca baccata Spanish Bayonet; Yucca; Banana Yucca; Blue Yucca 1 0