反应详情

An ice cold solution of methyl 2-(7-(aminomethyl)-4-(3,4-dimethylphenyl)-2-methyl-1-oxo-1,2-dihydroisoquinolin-3-yl)-2-(tert-butoxy)acetate (17 mg, 0.039 mmol) in dichloromethane (DCM) (750 μl) was treated with Et3N (8.14 μl, 0.058 mmol) and MsCl (3.64 μl, 0.047 mmol), stirred for 1 hour, and then warmed to rt for 1 hour. Additional Et3N (8 uL) and MsCl (4 uL) were added at 00° C., the reaction was stirred at rt for 1 hour, and then concentrated. The residue was purified by column chromatography (0-10% MeOH/DCM) to afford methyl 2-(tert-butoxy)-2-(4-(3,4-dimethylphenyl)-2-methyl-7-(methylsulfonamidomethyl)-1-oxo-1,2-dihydroisoquinolin-3-yl)acetate (17 mg, 0.033 mmol, 85% yield) as yellow solid. The methyl ester was hydrolyzed in a manner similar to that described in Example 165 Step C and purified by reverse phase HPLC to afford 2-(tert-butoxy)-2-(4-(3,4-dimethylphenyl)-2-methyl-7-(methylsulfonamidomethyl)-1-oxo-1,2-dihydroisoquinolin-3-yl)acetic acid (14 mg, 0.027 mmol, 88% yield) as a white solid. 1H NMR (400 MHz, CHLOROFORM-d) δ ppm 8.44 (s, 1 H), 7.59-7.50 (m, 1 H), 7.40-7.29 (m, 1 H), 7.29-7.24 (m, 1 H), 7.17 (dd, J=8.4, 12.5 Hz, 1 H), 7.08-6.99 (m, 1 H), 5.35 (s, 1 H), 5.15-5.03 (m, 1 H), 4.44 (d, J=5.7 Hz, 2 H), 3.67 (s, 3 H), 2.97-2.89 (m, 3 H), 2.37 (s, 3 H), 2.32 (s, 3 H), 1.09-1.02 (m, 9 H); LCMS (m/z) ES+=501 (M+1).

1. stirring, the reaction was stirred at rt for 1 hour
2. concentrationconcentrated
3. customThe residue was purified by column chromatography (0-10% MeOH/DCM)