反应详情

温度

0 °C

To a solution of tert-butyl N-(4-[[(3R)-3-(carbamoylmethyl)-7-thia-9,11-diazatricyclo[6.4.0.0[2,6]]dodeca-1(8),2(6),9,11-tetraen-12-yl]oxy]cyclohexyl)-N-ethylcarbamate (230 mg, 0.48 mmol, 1.00 equiv) in dichloromethane (4 mL) was added hydrochloric acid (12 M, 0.5 mL) at 0° C. and the resulting solution was stirred for 3 hr at 0° C. The resulting mixture was concentrated under vacuum. The crude product (180 mg) was purified by preparative HPLC under the following conditions (SHIMADZU): column: SunFire Prep C18, 19*150 mm 5 um; mobile phase: water with 100 mM NH4HCO3 and CH3CN (6.0% CH3CN up to 60% in 20 min); flow rate: 20 mL/min; UV detection at 254/220 nm. The product-containing fractions were collected and partially evaporated to remove water and CH3CN under reduced pressure. The residue was lyophilized overnight to give the desired 2-[(3R)-12-[[4-(ethylamino)cyclohexyl]oxy]-7-thia-9,11-diazatricyclo[6.4.0.0[2,6]]dodeca-1(8),2(6),9,11-tetraen-3-yl]acetamide (114.4 mg, 63%) as a white solid. MS (ES): m/z 375 [M+H]+. 1H-NMR (300 MHz, CD3OD): δ 8.47 (1H, s), 5.29 (1H, m), 4.82 (1H, m), 3.07-3.10 (1H, m), 2.93-2.99 (2H, m), 2.58-2.73 (4H, m), 2.23-2.23 (4H, m), 2.03-2.18 (2H, m), 1.66 (2H, m), 1.40-1.30 (2H, m), 1.03-1.18 (3H, t).

1. concentrationThe resulting mixture was concentrated under vacuum
2. customThe crude product (180 mg) was purified by preparative HPLC under the following conditions (SHIMADZU)
3. waitmobile phase: water with 100 mM NH4HCO3 and CH3CN (6.0% CH3CN up to 60% in 20 min)
4. customThe product-containing fractions were collected
5. custompartially evaporated
6. customto remove water and CH3CN under reduced pressure
7. waitThe residue was lyophilized overnight