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0 °C

This example illustrates a synthesis of 1-(6,7-Oxidoheptyl)-3,7-dimethylxanthine (inventive compound no. 1586). To a solution of 6-hepten-1-ol (6.00 g, 52.6 mmol) in dichloromethane (120 mL) at 0° C. was added methanesulfonyl chloride (6.07 g, 4.0 mL, 53.0 mmol), followed by triethylamine (7.79 g, 77.0 mmol). After stirring for 10 minutes at 0° C., the reaction was allowed to warm to 25° C. and then stirred for 2 hours. The reaction was poured into water (100 mL) and extracted with dichloromethane (2×100 mL). The organic portions were combined, dried over magnesium sulfate, and evaporated to give the 7-methanesulfonyl-1-heptene as a yellow oil (9.30 g, 93%), which was used without further purification.

1. temperatureto warm to 25° C.
2. stirringstirred for 2 hours
3. extractionextracted with dichloromethane (2×100 mL)
4. dry with materialdried over magnesium sulfate
5. customevaporated