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Chemical and Pharmaceutical Bulletin
Vol. 36 (1988) No. 1 P 244-248

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http://doi.org/10.1248/cpb.36.244


Xanthine oxidase (XO) inhibitors were isolated from the rhizomes of Alpinia galanga (Zingiberaceae), and were identified as trans-p-coumaryl diacetate (1), trans-coniferyl diacetate (2), [1'S]-1'-acetoxychavicol acetate (3), [1'S]-1'-acetoxyeugenol acetate (4) and 4-hydroxybenzaldehyde (5). The type of inhibition by either 1 or 3 with respect to xanthine as a substrate was uncompetitive.

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