2,4,6-Trimethylpyridine → N-[3-(9-chloro-3-methyl-4-oxo-5H-isoxazolo[4,3-c]quinolin-5-yl)-cyclohexyl]-2-phenylamino-acetamide

関与物質

反応手順

Anhydrous dimethylformamide (10 mL) in a nitrogen atmosphere was used to dissolve 5-(3-aminocyclohexyl)-9-chloro-3-methyl-5H-isoxazolo[4,3-c]quinolin4-one (50 mg; 0.151 mmol), N-phenylglycine (29.6 mg; 0.196 mmol; 1.3 equiv), 1-hydroxy-7-azabenzotriazole (26.7 mg; 0.196 mmol; 1.3 equiv), 1-[3-(dimethylamino)propyl[-3-ethylcarbodiimide hydrochloride (37.6 mg; 0.196 mmol; 1.3 equiv), and 2,4,6-trimethylpyridine (199 μL; 1.51 mmol; 10 equiv). After overnight stirring at room temperature, the reaction solution was treated in a manner similar to Example 159. The resulting material was purified by three consecutive radial chromatography runs on a 2 mm thick silica gel rotor with a 1% methanol/dichloromethane (v/v) mobile phase, a 1% methanol/0.25% triethylamine/dichloromethane (v/v/v) mobile phase, and a 5% acetonitrile/dichloromethane mobile phase. The desired product was isolated as a white solid 56% yield (30 mg). MS(ES) calc'd: [M+M]+=465.16 m/z; [M−H]−=463.16 m/z; [M+OAc]−=523.16 m/z. Found: 465.1 m/z; 463.2 m/z; 523.2 m/z.

情報源と証拠