Triethylamine → 2-Methyl-2-[[4-(2-propan-2-yl-1,2,4-triazol-3-yl)-9-oxa-3,6,13-triazatricyclo[8.4.0.02,6]tetradeca-1(14),2,4,10,12-pentaen-12-yl]oxy]propanamide

Participants

Reaction Steps

To a solution of 2-[2-(2-isopropyl-2H-[1,2,4]triazol-3-yl)-4,5-dihydro-6-oxa-1,3a,9-triaza-benzo[e]azulen-8-yloxy]-2-methyl-propionic acid (96 mg, 0.24 mmol) in DMF (3 mL) was added HATU (184 mg, 0.48 mmol), ammonium chloride (39 mg, 0.72 mmol) and triethyl amine (100 μL, 0.72 mmol) and the reaction mixture stirred at RT for 2 h. The reaction mixture was concentrated in vacuo, the residue dissolved in ethyl acetate (10 mL) and the mixture washed with water, extracting with ethyl acetate (3×10 mL). The combined organic extracts were washed with brine, dried (MgSO4) and concentrated in vacuo. The residue was subjected to reverse phase preparative HPLC (C-18, 10-90% MeCN in water 0.1% formic acid, 25 min gradient) to yield 429 as a white solid (38 mg, 38%). LCMS: RT=7.36 min, [M+H]+=398; 1H NMR (400 MHz, d6-DMSO) 8.99 (1H, s), 8.11 (1H, s), 7.87 (1H, s), 7.86 (1H, s), 7.16 (1H, s), 6.89 (1H, s), 6.37 (1H, s), 5.89 (1H, sept, J=6.6 Hz), 4.59-4.42 (4H, m), 1.54 (6H, s), 1.44 (6H, d, J=6.6 Hz)

Provenance & Evidence