Sodium hydride → HCID 178476294, compound

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Reaction Steps

4-[(1E,3E)-4-[trans-5-[[(1R,2R)-2-(2,4-Difluorophenyl)-2-hydroxy-1-methyl-3-(1H-1,2,4-triazol-1-yl)propyl]thio]-1,3-dioxan-2-yl]-1,3-butadienyl]-3-fluorobenzonitrile (1.10 g, 2.03 mmol) obtained from Reference example 1 was dissolved in N,N-dimethylformamide (5 ml), and then sodium hydride (ca. 50 mg, 2.1 mmol) was added thereto at room temperature. The mixture was stirred for 15 minutes, then 4-chloro-oxobutyl acetate (330 mg, 2.0 mmol) obtained from Example 12-(1) was added thereto, and the resulting mixture was stirred for another 1 hour. The mixture was diluted with ethyl acetate, and a saturated aqueous solution of ammonium chloride was poured thereinto. The organic layer was separated, then washed successively with an aqueous solution of sodium hydrogen carbonate and with an aqueous solution of sodium chloride, and dried over anhydrous magnesium sulfate, and then the solvent was distilled off under reduced pressure. The obtained crude compound was purified by recycle preparative HPLC [LC-908; Japan Analytical Industry Co., Ltd.; GPC column JAIGEL-1H (20 mm i.d. ×600 mm) and JAIGEL-2H (20 mm i.d. ×600 mm) connected in series for use; solvent, chloroform] to afford the title compound (662 mg, 49% yield) as a colorless amorphous solid.

Provenance & Evidence