Inhibition of Bacillus pasteurii urease enzyme by 3,7,15-tri-O-acetyl-5-O-nicotinoyl-13,14-dihydroxymyrsinol (1), a diterpene ester with a myrsinol-type skeleton, isolated from Euphorbia decipiens Boiss. and Buhse, was un-competitive consistent with the molecular docking results. The Ki value was 117.40 +/- 0.7 microM.
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