[C:1]1([CH2:7][O:8][C:9]2[CH:10]=[C:11]3[C:15](=[CH:16][CH:17]=2)[C:14](=[O:18])[CH2:13][CH2:12]3)[CH:6]=[CH:5][CH:4]=[CH:3][CH:2]=1.[BH4-].[Na+].O>O1CCCC1.CO>[C:1]1([CH2:7][O:8][C:9]2[CH:10]=[C:11]3[C:15](=[CH:16][CH:17]=2)[CH:14]([OH:18])[CH2:13][CH2:12]3)[CH:2]=[CH:3][CH:4]=[CH:5][CH:6]=12,3-Dihydro-5-(phenylmethoxy)-1H-inden-1-one (1.3 g, 5.46 mmol) was dissolved in a mixed solution of tetrahydrofuran (20 mL) and methanol (10 mL). Sodium borohydride (0.41 g, 11 mmol) was added thereto, and then the mixture was stirred at room temperature for 2 hours. To the reaction solution was added water, and the reaction mixture was extracted with ethyl acetate. The extract was dried, and then concentrated under reduced pressure. The residue was purified with silica gel column chromatography (hexane/ethyl acetate=3:1) to give the title compound (1.16 g, yield 89%) as white powders.
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