反应详情

tert-Butyl-7-(4-(4-chlorobenzyloxy)-2-oxopyridin-1(2H)-yl)-5-methyl-3,4-dihydro-1H-pyrido[4,3-b]indole-2(5H)-carboxylate (143 mg, 0.275 mmol) was dissolved in MeOH (1 mL) and 2 N HCl in Et2O (5 mL) was added. The reaction was allowed to proceed for 3 h. The resulting precipitate was collected by filtration and washed with Et2O to provide the title compound (95 mg, 71%) as a yellow solid: mp 305-310° C. dec; 1H NMR (500 MHz, DMSO-d6) δ 9.54 (br s, 2H), 7.57 (m, 2H), 7.51 (s, 5H), 6.99 (d, J=7.8 Hz, 1H), 6.12 (dd, J=7.8, 2.7 Hz, 1H), 5.99 (d, J=2.7 Hz, 1H), 5.16 (s, 2H), 4.33 (br s, 2H), 3.68 (s, 3H), 3.52-3.48 (m, 2H), 3.12-3.08 (m, 2H); ESI MS m/z 420 [M+H]+; HPLC (Method B) 97% (AUC), tR=13.99 min.

1. filtrationThe resulting precipitate was collected by filtration
2. washwashed with Et2O