Hydrochloric Acid → HCID 10051153, compound

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A solution of {3-[[1-(5-benzyl-3-methyl-4-oxo-4,5-dihydro-isoxazolo[5,4-d]pyrimidin-6-yl)-2-methyl-propyl]-(4-methyl-benzoyl)-amino]-propyl}-carbamic acid tert-butyl ester (method 48) (0.058 g, 0.1 mmol) in 3 ml of 4 M HCl in dioxane was stirred at room temperature for 2 hr. The solvent was distilled off by vacuo, the residue was dried at 40˜50° C. for overnight under vacuum. N-(3-Amino-propyl)-N-[1-(5-benzyl-3-methyl-4-oxo-4,5-dihydro-isoxazolo[5,4-d]pyrimidin-6-yl)-2-methyl-propyl]-4-methyl-benzamide was obtained as the HCl salt. Yield was 0.046 g (88%). m/z 488 (MH+), 1H NMR (500 MHz, 100° C., DMSO-d6): 0.48 (d, 3H), 0.94 (d, 3H), 1.30 (m, 1H), 1.60 (m, 1H), 2.35 (m, 2H), 2.38 (s, 3H), 2.58 (s, 3H), 2.70 (m, 1H), 3.37 (m, 2H), 5.11 (d, 1H), 5.64 (d, 1H), 5.90 (d, 1H), 7.23-7.39 (m, 9H), 7.63 (br, 3H).

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