反应详情

The product of Example 1A (330 mg, 1 mmol) was treated with 3-amino-4-methyl-phenylboronic acid (Lancaster, 302 mg, 2 mmol) according to the procedure of Example 1B. The free base of the title compound was purified by chromatography (SiO2, CH2Cl2:MeOH:NH3H2O, 90:10:2, Rf. 0.10) as oil (230 mg, yield, 75%). The free base of the title compound (230 mg, 0.75 mmol) in ethyl acetate (5 mL) was treated with 4M HCl in 1,4-dioxane (0.5 mL, 2 mmol). The title compound was obtained as solid (180 mg, yield, 74%): 1H NMR (MeOH-d4, 300 MHz) δ 1.85-2.19 (m, 3H), 2.28-2.38 (m, 1H), 2.43 (s, 3H), 2.51-2.57 (m, 1H), 3.31-3.45 (m, 5H), 3.82-3.89 (m, 1H), 4.93-4.99 (m, 1H), 7.13 (dt, J=8.8, 3.0 Hz, 2H), 7.44 (d, J=8.8 Hz, 1H), 7.56-7.66 (m, 4H) ppm. MS (DCl/NH3) m/z 309 (M+H)+. Anal. Calculated for C19H22N2O.2.0HCl.0.1H2O: C, 62.70; H, 6.89; N, 7.31. Found: C, 62.52; H, 6.59; N, 7.35.

1. customThe free base of the title compound was purified by chromatography (SiO2, CH2Cl2:MeOH:NH3H2O, 90:10:2, Rf. 0.10) as oil (230 mg, yield, 75%)