Pyrrolidine → 1-Methylethyl 4-[({6-[4-(1-pyrrolidinylcarbonyl)phenyl]-3-pyridinyl}oxy)methyl]-1-piperidinecarboxylate

Participants

Reaction Steps

4-(5-{[(1-{[(1-Methylethyl)oxy]carbonyl}-4-piperidinyl)methyl]oxy}-2-pyridinyl)benzoic acid (0.05 g, 0.13 mmol) was added to a solution of pyrrolidine (0.01 g, 0.13 mmol) in DMF (2 mL), followed by addition of HATU (0.05 g, 0.13 mmol), and diisopropylethylamine (0.02 g, 0.13 mmol). The reaction mixture was stirred at room temperature for 10 minutes. The reaction was then purified by reverse-phase preparative HPLC using CH3CN:H2O gradient (0:100 to 90:10) with 0.05% TFA as a modifier. The resultant lyophilized material was converted to its free base by dissolving the solid in CH2Cl2, washing with saturated aqueous NaHCO3 and concentrating in vacuo to give the title compound (15 mg, 25%) as a white solid. 1H NMR (400 MHz, CDCl3): δ 8.44 (d, 1H, J=2.9 Hz), 7.93 (d, 2H, J=8.4 Hz), 7.65 (d, 1H, J=8.6 Hz), 7.68 (d, 2H, J=8.4 Hz), 7.27-7.20 (m, 1H), 4.95-4.85 (m, 1H), 4.29-4.12 (m, 2H), 3.87 (d, 2H, J=6.4 Hz), 3.68-3.59 (m, 2H), 3.47-3.41 (m, 2 H), 2.78-2.72 (m, 2H), 2.04-1.78 (m, 7H), 1.34-1.28 (m, 2H), 1.22 (d, 6H, J=6.2 Hz); LRMS (ESI), m/z 452 (M+H).

Provenance & Evidence