反応 #168425

反応方程式

7-chloro-4-(5-chloropyridin-3-yl)-2-[(4aR,7aR)-hexahydrocyclopenta[b][1,4]oxazin-4(4aH)-yl]-N′-hydroxy-3-[(trans-4-methylcyclohexyl)methyl]-3H-imidazo[4,5-c]pyridine-6-carboximidamide

1,1′-carbonyldiimidazole

1,8-diazabicyclo[5.4.0]undec-7-ene

→

3-{7-chloro-4-(5-chloropyridin-3-yl)-2-[(4aR,7aR)-hexahydrocyclopenta[b][1,4]oxazin-4(4aH)-yl]-3-[(trans-4-methylcyclohexyl)methyl]-3H-imidazo[4,5-c]pyridin-6-yl}-1,2,4-oxadiazol-5(4H)-one

溶媒

acetonitrile

反応条件

後処理

1. 1
   濃縮concentrated
2. 2
   その他The residue was purified by mass triggered reverse phase HPLC (C-18)
3. 3
   洗浄eluting with acetonitrile/water+0.1% TFA

実験手順

To 7-chloro-4-(5-chloropyridin-3-yl)-2-[(4aR,7aR)-hexahydrocyclopenta[b][1,4]oxazin-4(4aH)-yl]-N′-hydroxy-3-[(trans-4-methylcyclohexyl)methyl]-3H-imidazo[4,5-c]pyridine-6-carboximidamide (33.3 mg, 0.06 mmol) in acetonitrile (2 mL) were added 1,1′-carbonyldiimidazole (19.3 mg, 0.119 mmol) and 1,8-diazabicyclo[5.4.0]undec-7-ene (0.036 mL, 0.238 mmol). The reaction was stirred at room temperature for 1 hour and then concentrated. The residue was purified by mass triggered reverse phase HPLC (C-18) eluting with acetonitrile/water+0.1% TFA to afford 3-{7-chloro-4-(5-chloropyridin-3-yl)-2-[(4aR,7aR)-hexahydrocyclopenta[b][1,4]oxazin-4(4aH)-yl]-3-[(trans-4-methylcyclohexyl)methyl]-3H-imidazo[4,5-c]pyridin-6-yl}-1,2,4-oxadiazol-5(4H)-one (TFA salt). MS ESI calc'd for C28H31Cl2N7O3 [M+H]+=584. found=584. 1H NMR (600 MHz, DMSO-d6) δ 12.74 (s, 1H), 8.92 (d, J=1.2 Hz, 1H), 8.80 (d, J=2.4 Hz, 1H), 8.46 (m, 1H), 3.94 (d, J=9.6 Hz, 1H), 3.77-3.86 (m, 2H), 3.56-3.62 (m, 2H), 3.39 (m, 1H), 3.05 (m, 1H), 2.87 (m, 1H), 2.31 (m, 1H), 1.86 (m, 1H), 1.71 (m, 1H), 1.51-1.64 (m, 2H), 1.32-1.41 (m, 2H), 1.12 (m, 1H), 1.04 (m, 1H), 0.81 (m, 1H), 0.65-0.74 (m, 6H), 0.46 (m, 1H), 0.30-0.42 (m, 2H).

出典