反应详情

A mixture of 17 mg (0.05 mmol) of 9-(1-isopropyl-1H-pyrazol-5-yl)-6,7-dihydroimidazo[1,2-d]pyrido[3,2-b][1,4]oxazepine-3-carboxylic acid, 30 mg, (0.061 mmol) of HATU and 0.022 ml (0.155 mmol) of triethylamine in 2 ml of DMF was stirred for 10 min. Ammonia (gas) was bubbled through the mixture for 5 min. The mixture was stirred for 1 hour, concentrated in vacuum and partitioned between ethyl acetate and 0.01 N aqueous HCl. The organic layer was concentrated and the residue purified on 4 g silica column eluting with 7-8% Methanol in DCM to give 114. Yield 2.4 mg. MS(ESI+) 339.2. 1H NMR (400 MHz, CH3OH+D2O) δ 8.70 (d, J=1.8, 1H), 8.33 (s, 1H), 8.05 (d, J=1.8, 1H), 7.52 (s, 1H), 6.48 (d, J=1.6, 1H), 5.16 (dd, J=13.2, 6.6, 1H), 4.56 (t, J=5.1, 2H), 3.52-3.45 (m, 2H), 1.49 (d, J=6.6, 6H).

1. customAmmonia (gas) was bubbled through the mixture for 5 min
2. stirringThe mixture was stirred for 1 hour
3. concentrationconcentrated in vacuum
4. custompartitioned between ethyl acetate and 0.01 N aqueous HCl
5. concentrationThe organic layer was concentrated
6. customthe residue purified on 4 g silica column
7. washeluting with 7-8% Methanol in DCM