Oleyl p-toluenesulfonate → 1,3-O-dioleyl-2-O-tetrahydrofuranylglycerol

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반응 단계

In 30 ml of xylene was dissolved 854 mg (5.3 mmol) of 2-O-tetrahydrofuranylglycerol. To this was added 1.78 g (15.9 mmol) of t-butoxypotassium under argon gas and the mixture was stirred for 5 minutes. Then, 10 ml of a solution of 6.71 g (15.9 mmol) oleyl p-toluenesulfonate in xylene was added dropwise and the mixture was stirred under reduced pressure (20-30 mmHg) at ambient temperature for 30 minutes and further at 50° C. for 1 hour. This reaction mixture was poured in ice-water and extracted with ether, and the extract was washed with water, dried, and concentrated. The residue was purified by column chromatography (silica gel/chloroform) to provide 628 mg (18%) of 1,3-O-dioleyl-2-O-tetrahydrofuranylglycerol as yellow oil. (5) In 30 ml of tetrahydrofuran was dissolved 628 mg (0.95 mmol) of 1,3-O-dioleyl-2-O-tetrahydrofuranylglycerol followed by addition of 5 ml of diluted (10%) hydrochloric acid, and the mixture was stirred overnight. The reaction mixture was then diluted with water, neutralized with saturated aqueous sodium hydrogen carbonate solution, and extracted with ether. The extract was dried and concentrated and the residue was subjected to column chromatography (silica gel/n-hexane-ethyl acetate) to provide 321 mg (57%) of the title compound as colorless oil.

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