Water → methyl (2E)-3-{2-[(1R)-1-({(2R)-3-[(2S)-2-(3-fluoro-4-methylbenzyl)pyrrolidin-1-yl]-2-hydroxypropyl}oxy)ethyl]phenyl}prop-2-enoate

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A mixture of methyl (2E)-3-(2-{(1R)-1-[(2R)-oxiran-2-yl methoxy]ethyl}phenyl)prop-2-enoate (237 mg, 0.90 mmol) described in WO 2004/106280, (2S)-2-(3-fluoro-4-methylbenzyl)pyrrolidine (167 mg, 0.86 mmol), which had been obtained in Example 1 (1e), and lithium perchlorate (55 mg, 0.52 mmol) in toluene (9 mL) was stirred at room temperature for 16 hours. Water (10 mL) was added to the reaction solution, which was then extracted with ethyl acetate (10 mL×3). After that, the organic layers were combined, washed with saturated brine, and dried over anhydrous magnesium sulfate. The solvent was distilled off under reduced pressure. The residue was purified by silica gel column chromatography (ethyl acetate) to give the title compound as a yellow oily substance (238 mg, yield 61%).

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