反应详情

TFA (131.1 mg, 88.58 μL, 1.150 mmol) was added to a solution of tert-butyl N-[[3-[5-[3-amino-6-[4-(dimethylcarbamoyl)phenyl]pyrazin-2-yl]-1,3,4-oxadiazol-2-yl]phenyl]methyl]carbamate (60 mg, 0.1150 mmol) in dichloromethane (2 mL) and the resulting solution stirred at room temperature overnight. The reaction mixture was passed through a bicarbonate cartridge, which was flushed further with methanol (5 mL). The filtrate was concentrated in vacuo to leave a yellow/orange solid. The solid was taken up in a mixture of methanol and dichloromethane and passed through an SCX cartridge. The cartridge was washed initially with methanol and then the product eluted with 2M ammonia in methanol solution over 4 fractions. A yellow solid crystallised out of the filtrate which was isolated by filtration to give the product (44 mg, 90% yield) 1H NMR (400 MHz, DMSO) d 2.98 (m, 6H), 3.87 (s, 2H), 7.55 (m, 2H), 7.59-7.66 (m, 2H), 7.81 (br s, 2H), 8.00 (m, 1H), 8.17 (m, 3H) and 8.99 (s, 1H) ppm; MS (ES+) 416.26

1. customwas flushed further with methanol (5 mL)
2. concentrationThe filtrate was concentrated in vacuo
3. customto leave a yellow/orange solid
4. washThe cartridge was washed initially with methanol
5. washthe product eluted with 2M ammonia in methanol solution over 4 fractions
6. customA yellow solid crystallised out of the filtrate which
7. customwas isolated by filtration