反应详情

温度

50 °C

2-(Butyloxy)-8-(methyloxy)-9H-purin-6-amine trifluoroacetate (1.346 g, 3.83 mmol) was heated with anhydrous potassium carbonate (2.118 g, 15.33 mmol) in dry DMF (17 ml) at 60° C. for 1 hour. Phenylmethyl 2-(2-bromoethyl)-1-piperidinecarboxylate (1.500 g, 4.60 mmol) was added and the reaction mixture heated at 50° C. overnight (20 hours). The reaction mixture was partitioned between water (250 ml) and ethyl acetate (150 ml). The aqueous was further extracted with 2×100 ml ethyl acetate. The combined organic layers were washed with 100 ml brine and passed through a hydrophobic frit to dry, then stripped to dryness (rotary evaporator). The residue was dissolved in DCM and loaded onto a 70 g silica cartridge and purified by chromatography using a gradient 0-100% ethyl acetate in dichloromethane+0-12% MeOH finish on a Flashmaster 2. Appropriate fractions were combined and evaporated in vacuo. The material was re-purified by chromatography on silica (70 g cartridge using a gradient of 0-100% ethyl acetate in dichloromethane over 40 mins. and subsequently a flush of 0-100% ethyl acetate in DCM+0-20% MeOH). Product fractions combined and evaporated in vacuo to give the title compound as a colourless oil (0.342 g).

1. customThe reaction mixture was partitioned between water (250 ml) and ethyl acetate (150 ml)
2. extractionThe aqueous was further extracted with 2×100 ml ethyl acetate
3. washThe combined organic layers were washed with 100 ml brine
4. customto dry
5. customstripped to dryness (rotary evaporator)
6. dissolutionThe residue was dissolved in DCM
7. custompurified by chromatography
8. customevaporated in vacuo
9. customThe material was re-purified by chromatography on silica (70 g cartridge
10. customover 40 mins
11. customand subsequently a flush of 0-100% ethyl acetate in DCM+0-20% MeOH)
12. customevaporated in vacuo