Hydrochloric Acid → 3-((8-(3-(3-Cyclopropyl-2-oxo-2,3-dihydro-1H-benzo[d]imidazol-1-yl)propyl)-4-oxo-1-phenyl-1,3,8-triazaspiro[4.5]decan-3-yl)methyl)benzoic acid

Participants

Reaction Steps

To tert-butyl 3-((8-(3-(3-cyclopropyl-2-oxo-2,3-dihydro-1H-benzo[d]imidazol-1-yl)propyl)-4-oxo-1-phenyl-1,3,8-triazaspiro[4.5]decan-3-yl)methyl)benzoate (0.27 g, 0.42 mmol) was added 4M solution of HCl in dioxane (4 mL) and triethylsilane (0.1 mL). After stirring at room temperature for 3 hours, the reaction mixture was concentrated in vacuo and lyophilized in acetonitrile/water (1:1) to obtain the title compound as a hydrochloride salt (0.215 g, 83%); 1H NMR (DMSO-d6): δ 0.88-0.90 (m, 2H), 1.01-1.06 (m, 2H), 1.90 (d, 2H, J=14.4 Hz), 2.12 (br, 2H), 2.87-2.91 (m, 3H), 3.21 (br, 2H), 3.45-3.69 (m, 4H), 3.90 (t, 2H, J=7.2 Hz), 4.64 (d, 4H, J=4.4 Hz), 6.80 (t, 1H, J=7.2 Hz), 7.00 (d, 2H, J=8.4 Hz), 7.07-7.09 (m, 2H), 7.19-7.28 (m, 4H), 7.48-7.57 (m, 2H), 7.88 (d, 2H, J=7.2 Hz), 10.33 (br, 1H), 13.02 (br, 1H); MS for C34H37N5O4 m/z 580.13 (M+H)+.

Provenance & Evidence