Water → 1-(5-Hexenyl)-3-methyl-7-(methylpivaloyl)xanthine

関与物質

反応手順

Sodium hydride (86 mg, 3.6 mmol) was added to a stirring solution of 3-methyl-7-(methylpivaloyl)xanthine 1404 (1.00 g, 3.6 mmol) in dimethyl sulfoxide (25 mL). After 15 minutes, 6-bromo-1-hexene (589 mg, 3.6 mmol) was added and stirring continued for 72 hours. The reaction mixture was then poured into water (70 mL) and extracted with dichloromethane (2×100 mL) and 20% ethanol/dichloromethane (1×100 mL). The combined organic layers were washed with saturated aqueous sodium chloride solution (50 mL) and dried over magnesium sulfate. The solvent was evaporated under vacuum to give a thick oil. Chromotograpy of the resulting thick oil using silica and ethyl acetate yielded 870 mg (67% yield) 1-(5-hexenyl)-3-methyl-7-(methylpivaloyl)xanthine (inventive compound no. 1441)

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