Reaction Steps
[1-((R)-3-Amino-1-methyl-propyl)-piperidin-4-yl]-(4-methyl-pyridin-3-ylmethyl)-phenyl-amine (200.0 mg, 0.57 mmol), EDCI (120.0 mg, 0.62 mmol) and HOBT (84.3 mg, 0.62 mmol) were combined in DMF (25 mL) to give a pale yellow solution. To this solution was added 4-cyano-2,6-dimethyl-benzoic acid (109.3 mg, 0.62 mmol) followed by DIPEA (119.0 μL, 0.68 mmol) and the resulting mixture was stirred at room temperature for 16 h. Standard workup according to General Procedure C gave the crude product as a tan oil. Purification by column chromatography on silica gel (97:2:1, CH2Cl2/MeOH/NH4OH) afforded 4-cyano-2,6-dimethyl-N-((R)-3-{4-[(4-methyl-pyridin-3-ylmethyl)-phenyl-amino]-piperidin-1-yl}-butyl)-benzamide as an off-white foam (209.0 mg, 72%). 1H NMR (CDCl3) δ 1.02 (d, 3H, J=6 Hz), 1.04 (m, 1H), 1.30 (m, 1H), 1.59 (m, 1H), 1.64 (s, 2H), 1.76 (m, 1H), 1.86 (m, 2H), 2.21 (t, 1H, J=11 Hz), 2.32 (s, 6H), 2.55 (t, 1H, J=11 Hz), 2.78 (m, 3H), 2.87 (s, 2H), 2.95 (s, 3H), 3.35 (m, 1H), 3.64 (m, 1H), 3.78 (sext, 1H, J=6 Hz), 4.07 (s, 2H), 6.59 (d, 2H, J=9 Hz), 6.73 (t, 1H, J=8 Hz), 7.14 (m, 3H), 7.50 (m, 1H), 8.01 (s, 1H), 8.28 (s, 1H), 8.35 (d, 1H, J=5 Hz).
