1,2-Dichloroethane → n-[4-(6,6-Dimethyl-4-oxo-4,5,6,7-tetrahydro[1,3]thiazolo[5,4-c]pyridin-2-yl)-3,4-dihydro-2h-1,4-benzoxazin-6-yl]-1-methyl-1h-imidazole-5-carboxamide

Participants

Reaction Steps

To a stirred solution of Example 42 (0.025 g, 0.08 mmol) in DCM (1 mL) were added 1-methylimidazol-5-ylcarboxylic acid (0.013 g, 0.10 mmol), DIPEA (0.02 mL, 0.10 mmol), EDC (0.030 g, 0.16 mmol) and HOBT (0.05 g, 0.04 mmol). The reaction mixture was stirred at r.t. for 18 h, then concentrated in vacuo. Purification by preparative HPLC (Method 6) gave the title compound (0.01 g, 29%) as a yellow oil. δH (CDCl3) 9.25 (1H, s), 8.46-8.43 (1H, m), 7.33 (1H, dd, J 8.9 and 2.4 Hz), 7.07 (1H, d, J 0.9 Hz), 7.02 (1H, d, J 0.8 Hz), 6.94 (1H, d, J 8.9 Hz), 5.56 (1H, br. s), 4.36-4.29 (2H, m), 4.16-4.09 (2H, m), 4.11 (3H, s), 2.90 (2H, s), 1.40 (6H, s). LCMS (ES+) 439.4 (M+H)+, RT 2.69 minutes (Method 1).

Provenance & Evidence