1,1'-Carbonyldiimidazole → 4-[bis-(3-methyl-pyridin-2-ylmethyl)-amino]-piperidine-1-carboxylic acid (1H-imidazol-2-yl)-amide

関与物質

反応条件

反応手順

A solution of 1,1′-carbonyldiimidazole (0.0924 g, 0.57 mmol), 2-aminoimidazole sulfate (0.0687 g, 0.52 mmol), and DIPEA (0.36 mL, 2.08 mmol) in CH2Cl2 (6 mL) and DMF (6 mL) was stirred at room temperature for 4.5 hours. The mixture was concentrated to rid of CH2Cl2, and DIPEA (0.36 mL, 2.08 mmol) and COMPOUND 249 (0.1614 g, 0.52 mmol) were added. The mixture stirred at 60° C. for 19 hours, then concentrated. Saturated NaHCO3 (15 mL) was added and extracted with CH2Cl2 (3×30 mL). The combined organic extracts were dried (Na2SO4), filtered and concentrated. Purification of the crude material by column chromatography on silica gel (50:1:1 CH2Cl2-MeOH—NH4OH) provided 37.1 mg (16%) COMPOUND 345 as a white solid. 1H NMR (CDCl3) δ 1.66-1.70 (m, 2H), 1.93-1.97 (m, 2H), 2.08 (s, 6H), 2.72 (t, 3H, J=10.8 Hz), 3.82 (s, 4H), 4.32 (d, 2H, J=11.4 Hz), 6.70 (s, 2H), 7.07-7.09 (m, 2H), 7.36 (d, 2H, J=7.2 Hz), 8.34 (s, 2H). 13C NMR (CDCl3) 18.37, 27.61, 44.75, 54.96, 57.81, 122.81, 133.79, 138.43, 145.43, 146.30, 155.71, 157.54. ES-MS m/z 420.1 (M+H).

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