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EXAMPLE 33 1.8 g (10 mmol) of (+)-methyl 4-(1-hydroxyethyl)benzoate (V-1) obtained in Example 1 was dissolved in 30 ml of dimethylformamide and then cooled to 10 C. 0.3 g (13 mmol) of sodium hydride was added thereto and stirred at a temperature of 30-35 C. for a hour. Then, 4.8 g (14 mmol) of n-dodecyl tosylate was added at a temperature of 20-25 C., and thereafter stirred at 40 C. for 3 hours. After completion of the reaction, the reaction mixture was poured into ice-water and then subjected to extraction-treatment with 100 ml of ether. The organic layer was water-washed and then concentrated in vacuo. The residue was then purified through a column chromatography to obtain 3.08 g of (+)-methyl 4-(1dodecyloxyethyl)benzoate (VII-33). Yield: 88.5%, nD20 =1.4762, [alpha]D20 +29.6 (c=1, CHCl3).