Hydrochloric Acid → 1-(4-Cyclopropylaminomethyl-piperidin-1-yl)-3-[2-methyl-4-(3-methyl-4,10-dihydro-3H-2,3,4,9-tetraaza-benzo[f]azulene-9-carbonyl)-phenyl]-propan-1-one

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Cyclopropyl-(1-{3-[2-methyl-4-(3-methyl-4,10-dihydro-3H-2,3,4,9-tetraaza-benzo[f]azulene-9-carbonyl)-phenyl]-propionyl}-piperidin-4-ylmethyl)-carbamic acid tert-butyl ester from Example E86.3 (220 mg, 0.35 mmol) was dissolved in methanol (5 ml) and 4M HCl solution in dioxan (5 ml) was added. The mixture was stirred for 2 h at room temperature then concentrated in vacuo to give an off-white solid identified as the title compound (189 mg, 95%).

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