反应详情

温度

130 °C

A mixture of 6-(imidazo[2,1-b]thiazol-5-ylmethyl)-2-(methylsulfinyl)benzo[d]thiazole (310 mg, 0.93 mmol), (1R,2R)-2-aminocyclohexanol (321 mg, 2.79 mmol) and DIEA (240 mg, 1.86 mmol) in NMP (10 mL) was stirred for 1 d at 130° C. The mixture was cooled to rt and water (50 mL) was added. The mixture was extracted with EtOAc (100 mL×3). The combined organic layers were washed with brine, dried over Na2SO4, filtered and concentrated under reduced pressure. The residue was purified by silica gel chromatography eluting with 50:1 to 10:1 DCM/MeOH, and the product was further purified by preparative HPLC to afford (1R,2R)-2-((6-(imidazo[2,1-b]thiazol-5-ylmethyl)benzo[d]thiazol-2-yl)amino)cyclohexanol as a brown solid (100 mg, 28%). 1H NMR (300 MHz, DMSO-d6) δ 7.84 (d, J=7.2 Hz, 1H), 7.68 (d, J=4.5 Hz, 1H), 7.54 (d, J=1.8 Hz, 1H), 7.27 (d, J=8.1 Hz, 1H), 7.20 (dd, J=0.9, 4.2 Hz, 1H), 7.10 (dd, J=1.8, 8.4 Hz, 1H), 7.02 (s, 1H), 4.71 (d, J=4.8 Hz, 1H), 4.15 (s, 2H), 3.52-3.49 (m, 1H), 3.39-3.36 (m, 1H), 2.05-2.01 (m, 1H), 1.90-1.86 (m, 1H), 1.65-1.59 (m, 2H), 1.30-1.16 (m, 4H). LCMS (ESI) m/z 385 (M+H)+.

1. temperatureThe mixture was cooled to rt
2. extractionThe mixture was extracted with EtOAc (100 mL×3)
3. washThe combined organic layers were washed with brine
4. dry with materialdried over Na2SO4
5. filtrationfiltered
6. concentrationconcentrated under reduced pressure
7. customThe residue was purified by silica gel chromatography
8. washeluting with 50:1 to 10:1 DCM/MeOH
9. customthe product was further purified by preparative HPLC