反应详情

温度

105 °C

A mixture of methyl 9-[(2R,3R,4S,5R)-3,4-dihydroxy-5-(hydroxymethyl)tetrahydro-2-furanyl]-6-[(2,2-diphenylethyl)amino]-9H-purine-2-carboxylate (Preparation 16) (0.52 g, 1.03 mmol) and 1,2-ethylenediamine (0.6 g, 10 mmol) was heated at 105° C. for 3 hours. The mixture was dissolved in a little dichloromethane and purified by column chromatography on silica gel eluting with dichloromethane:methanol:concentrated aqueous ammonia (85:15:1.5, by volume). After evaporation of appropriate fractions the residue was triturated with diethyl ether, filtered and dried to yield the target compound as a white solid, (0.43 g, 78%).

1. custompurified by column chromatography on silica gel eluting with dichloromethane
2. customAfter evaporation of appropriate fractions the residue
3. customwas triturated with diethyl ether
4. filtrationfiltered
5. customdried