反应详情

Triethylamine (70.2 μl, 0.50 mmol) and (S)-(−)-2-acetoxypropionyl chloride (32.9 μl, 0.25 mmol) were added to a methylene chloride suspension (7.0 ml) of 5-[8-(cis-3,5-dimethylpiperazin-1-yl)-6-morpholin-4-yl-9-(2,2,2-trifluoroethyl)-9H-purin-2-yl]pyrimidin-2-amine (112.7 mg, 0.23 mmol) with ice cooling. The resulting mixture was stirred at room temperature for 3 hours followed by the addition of (S)-(−)-2-acetoxypropionyl chloride (9.0 μl, 0.07 mmol) with ice cooling and the resulting mixture was stirred at room temperature for 1 day. The reaction mixture was poured into methylene chloride-methanol (10:1), washed with saturated aqueous sodium hydrogen carbonate solution, and dried over anhydrous sodium sulfate. After filtration, the filtrate was concentrated under reduced pressure, the resulting residue was dissolved in methylene chloride (7.0 ml) followed by the addition of triethylamine (140.3 μl, 1.01 mmol) and (S)-(−)-2-acetoxypropionyl chloride (65.7 μl, 0.50 mmol) with ice cooling, and the resulting mixture was stirred at room temperature for 1 day. The reaction mixture was poured into methylene chloride-methanol (10:1), washed with saturated aqueous sodium hydrogen carbonate solution, and dried over anhydrous sodium sulfate. After filtration, the filtrate was concentrated under reduced pressure, a 25% by weight sodium methoxide-methanol solution (157.0 μl, 0.69 mmol) was added to a methanol (6.0 ml) solution of the resulting residue, and the resulting mixture was stirred at 50° C. for 22 hours. The resulting mixture was left standing to cool and then the reaction mixture was poured into methylene chloride and washed with saturated brine. The organic layer was dried over anhydrous sodium sulfate, the mixture was filtrated, the filtrate was concentrated under reduced pressure, and the resulting residue was purified by preparative thin layer silica gel chromatography (methylene chloride:methanol=10:1) to give the title compound (132.6 mg, 96%) as a pale yellow solid.

1. stirringthe resulting mixture was stirred at room temperature for 1 day
2. washwashed with saturated aqueous sodium hydrogen carbonate solution
3. dry with materialdried over anhydrous sodium sulfate
4. filtrationAfter filtration
5. concentrationthe filtrate was concentrated under reduced pressure
6. dissolutionthe resulting residue was dissolved in methylene chloride (7.0 ml)
7. stirringthe resulting mixture was stirred at room temperature for 1 day
8. washwashed with saturated aqueous sodium hydrogen carbonate solution
9. dry with materialdried over anhydrous sodium sulfate
10. filtrationAfter filtration
11. concentrationthe filtrate was concentrated under reduced pressure
12. stirringthe resulting mixture was stirred at 50° C. for 22 hours
13. waitThe resulting mixture was left
14. temperatureto cool
15. washwashed with saturated brine
16. dry with materialThe organic layer was dried over anhydrous sodium sulfate
17. filtrationthe mixture was filtrated
18. concentrationthe filtrate was concentrated under reduced pressure
19. customthe resulting residue was purified by preparative thin layer silica gel chromatography (methylene chloride:methanol=10:1)