反应详情

温度

80 °C

370 mg (60 mmoles) of 4-t-butyldimethyl silyloxy-3-(3-t-butyldimethylsilyloxy-1-octenyl)-2-(1-hydroxy-6-methoxycarbonylhexyl)cyclopentanone obtained in Example 22, (1) was dissolved in 10 ml of a mixed solvent consisting of acetic acid, tetrahydrofuran and water in a ratio of 2:1:1, and the solution was stirred at 80° C. for 7 hours. An aqueous solution of sodium bicarbonate and ethyl acetate were added to perform extraction. The organic layers were combined, washed with a saturated aqueous solution of sodium chloride, and dried over anhydrous magnesium sulfate. The dried product was filtered, concentratd, and subjected to silica gel column chromatography (silica gel), 10 g; eluent, hexane:ethyl acetate=5:1→1:2) to give 218 mg (yield 62%) of 4-(3-hydroxy-1-octenyl)-5-(1-hydroxy-6-methoxycarbonylhexyl)cyclopentenone

1. extractionextraction
2. washwashed with a saturated aqueous solution of sodium chloride
3. dry with materialdried over anhydrous magnesium sulfate
4. filtrationThe dried product was filtered