反应详情

A mixture of 6-chloro-2-methyl-9-(β-D-ribofuranosyl)-9H-purine (902 mg), trans-2-aminocyclopentanol (404 mg), DEA (517 mg) and isopropanol (35 ml) was heated under reflux with stirring for 22 h under nitrogen. Additional trans-2-aminocyclopentanol (202 mg) and DEA (259 mg) were added and heating under reflux was maintained for a further 5 h. The cooled mixture was concentrated in vacuo and the residual foam (1.9 g) was purified by column chromatography on silica (Merck 9385, deactivated with triethylamine) eluting with System B (10:1) to give a solid (1.01 g). This was repurified by column chromatography on silica (Merck 9385) eluting with System B (10:1) to give the title compound (0.57 g), m.p. 188°-192°.

1. temperaturewas heated
2. temperatureunder reflux
3. temperatureheating
4. temperatureunder reflux
5. temperaturewas maintained for a further 5 h
6. concentrationThe cooled mixture was concentrated in vacuo
7. customthe residual foam (1.9 g) was purified by column chromatography on silica (Merck 9385, deactivated with triethylamine)
8. washeluting with System B (10:1)