Sodium Hydroxide → 6-Methyl-pyridine-2-carboxylic acid {3-[4-(2-naphthalen-1-yl-acetylamino)-imidazol-1-yl]-cyclobutyl}-amide

関与物質

反応手順

A solution of 6-methylpicolinic acid (9.4 mg, 0.07 mmol) in methylene chloride was treated with 1-(3-dimethylaminopropyl)-3-ethylcarbodiimide hydrochloride (84 mg) and DMAP (2 mg) at 23° C. After stirring for 10 min, N-[1-(cis-3-amino-cyclobutyl)-1H-imidazol-4-yl]-2-naphthalen-1-yl-acetamide (Example 6, 20 mg, 0.06 mmol), was added. The resulting mixture was then stirred for 3 h. Water was added, the solution was made neutral with aqueous NaOH and was extracted with ethyl acetate. The organic layer was dried (MgSO4), filtered, and concentrated in vacuo. Purification by silica gel chromatography (20:1 CHCl3—MeOH) gave 26 mg (95% yield) of 6-methyl-pyridine-2-carboxylic acid {3-[4-(2-naphthalen-1-yl-acetylamino)-imidazol-1-yl]-cyclobutyl}-amide; 1H NMR (400 MHz, CDCl3) δ9.15 (s, 1H), 8.28 (d, J=8.3 Hz, 1H), 8.01 (d, J=7.5 Hz, 1H), 7.96 (d, J=7.5 Hz, 1H), 7.97 (d, J=7.5 Hz, 1H), 7.81 (dd, J=2.4, 6.6 Hz, 1H), 7.72 (m, 1H), 7.5 (m, 5H), 7.2 (m, 1H), 7.16 (s, 1H), 4.45 (m, 1H), 4.25 (m, 1H), 4.18 (s, 2H), 2.98 (m, 2H), 2.60 (s, 3H), 2.40 (m, 2H); MS (AP/Cl): 440.3 (M+H)+.

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