反应详情

温度

25 °C

A solution of {2-[3-(7-methoxy-thiazolo[5,4-d]pyrimidin-2-yl)-ureido]-ethyl}-carbamic acid tert-butyl ester (170 mg, 0.46 mmol) was treated with trifluoroacetic acid (80 μL, 0.57 mmol). The reaction was stirred at 25° C. for 1 h. The reaction was then concentrated in vacuo, triturated with diethyl ether, collected by filtration and dried in vacuo. A portion of the resulting trifluoroacetic acid salt of 3-amino-pyrrolidine-1-carboxylic acid (7-methoxy-thiazolo[5,4-d]pyrimidin-2-yl)-amide (88 mg, 0.23 mmol) in methylene chloride at 25° C. was treated with 4-fluoro-3-(trifluoromethyl)benzoyl chloride (70 mL, 0.46 mmol). The resulting solution was stirred at 25° C. overnight. Flash chromatography (Merck Silica gel 60, 230-400 mesh, gradient elution 3:1 ethyl acetate/hexanes to 100% ethyl acetate) afforded 4-fluoro-N-{2-[3-(7-methoxy-thiazolo[5,4-d]pyrimidin-2-yl)-ureido]-ethyl}-3-trifluoromethyl-benzamide (25 mg, 11.8%) as a white solid; ES-HRMS m/e calcd for C17H14F4N6O3S (M+H)+ 459.0857, found 459.0862.

1. concentrationThe reaction was then concentrated in vacuo
2. customtriturated with diethyl ether
3. filtrationcollected by filtration
4. customdried in vacuo
5. stirringThe resulting solution was stirred at 25° C. overnight
6. washFlash chromatography (Merck Silica gel 60, 230-400 mesh, gradient elution 3:1 ethyl acetate/hexanes to 100% ethyl acetate)