[H-].[H-].[H-].[H-].[Li+].[Al+3].N#N.[OH:9][CH2:10][CH2:11][N:12]([CH2:31][CH2:32][OH:33])[C:13](=O)[CH2:14][CH2:15][CH2:16][CH2:17][CH2:18][CH2:19][CH2:20][CH2:21][CH2:22][CH2:23][CH2:24][CH2:25][CH2:26][CH2:27][CH2:28][OH:29].[OH-].[K+]>O1CCCC1>[OH:33][CH2:32][CH2:31][N:12]([CH2:13][CH2:14][CH2:15][CH2:16][CH2:17][CH2:18][CH2:19][CH2:20][CH2:21][CH2:22][CH2:23][CH2:24][CH2:25][CH2:26][CH2:27][CH2:28][OH:29])[CH2:11][CH2:10][OH:9]A 500-ml flask equipped with a stirrer and reflux condenser was charged with 3.01 g (79.3 mmol) of LiAlH4 and 200 ml of tetrahydrofuran. While stirring the mixture at room temperature in an N2 atmosphere, 5.00 g (13.9 mmol) of N,N-bis(2-hydroxyethyl)-16-hydroxyhexadecanamide were added, followed by stirring at 65° C. for 18 hours. After cooling the reaction mixture to room temperature, 15 g of 3% aqueous KOH were added, and a salt deposited was separated by filtration. The solvent was then distilled off under reduced pressure, and the resultant residue was purified by column chromatography on silica gel, thereby obtaining 2.98 g (yield: 62%) of the title compound (IId-3).
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