Piperonyl alcohol → 1-(benzo[d][1,3]dioxol-5-ylmethyl)-3-(1-((3,5-dimethylisoxazol-4-yl)methyl)-1H-pyrazol-4-yl)imidazolidine-2,4-dione

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Prepared as in example 10-35 from 3-(1-((3,5-dimethylisoxazol-4-yl)methyl)-1H-pyrazol-4-yl)imidazolidine-2,4-dione (example 10-1) and benzo[d][1,3]dioxol-5-ylmethanol. Yield: 19%. 1H NMR (DMSO, 400 MHz): δ2.143 (s, 3H), 2.408 (s, 3H), 3.977 (s, 2H), 4.440 (s, 2H), 5.202 (s, 2H), 6.003 (s, 2H), 6.897 (m, 3H), 7.788 (s, 1H), 8.181 (s, 1H). MS M+H calculated 410.1; found 410.1. The title compound was shown to inhibit hT2R08 bitter receptor and had an IC50 of 0.07 uM.

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