[H-].[Al+3].[Li+].[H-].[H-].[H-].C[O:8][C:9]([C:11]1[CH:12]=[C:13]2[C:17](=[CH:18][CH:19]=1)[NH:16][C:15]([CH2:20][CH2:21][O:22][CH:23]1[CH2:28][CH2:27][CH2:26][CH2:25][O:24]1)=[CH:14]2)=O.O.[Cl-].[NH4+]>C1COCC1>[O:24]1[CH2:25][CH2:26][CH2:27][CH2:28][CH:23]1[O:22][CH2:21][CH2:20][C:15]1[NH:16][C:17]2[C:13]([CH:14]=1)=[CH:12][C:11]([CH2:9][OH:8])=[CH:19][CH:18]=2Lithium aluminum hydride (3.38 g, 89.0 mmol) in anhydrous THF (100 mL) was cooled to −30° C. 2-[2-(Tetrahydro-pyran-2-yloxy)-ethyl]-1H-indole-5-carboxylic acid methyl ester (13.5 g, 44.5 mmol) in anhydrous THF (100 mL) was added dropwise. The reaction mixture was stirred at −20° C. for 1 hour and then at room temperature for 4 hours. The reaction mixture was cooled to 0° C. and water (6 mL) was added slowly. Ammonium chloride solution (200 mL) was added and extracted with ethyl acetate (2×200 mL). The organic phase was washed with water (100 mL), then brine (100 mL), and dried over anhydrous sodium sulfate. The solvent was evaporated to give {2-[2-(tetrahydro-pyran-2-yloxy)-ethyl]-1H-indol-5-yl}-methanol as a white solid. Yield: 11.50 g (94%).
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