(7R)-7-({[t-Butyl(dimethyl)silyl]oxy}methyl)-7-methyl-5-(methylthio)-2,3,6,7-tetrahydro-1,4-thiazepine → 6-(4-{1-[(8R)-8-({[t-Butyl(dimethyl)silyl]oxy}methyl)-8-methyl-5,6,8,9-tetrahydro[1,2,4]triazolo[4,3-d][1,4]thiazepin-3-yl]cyclopropyl}phenyl)nicotinonitrile

Participants

Reaction Conditions

Reaction Steps

The compound (418 mg, 1.31 mmol) obtained in Example 4-1) and the compound (364 mg, 1.31 mmol) obtained in Example 60-3) were dissolved in 1-butanol (5 mL), and the mixture was stirred at 140° C. for 5 h under a nitrogen atmosphere. The reaction mixture was cooled to room temperature, then the solvent was distilled off, and the obtained residue was purified by silica gel column chromatography (elution solvent: methanol/ethyl acetate=0% to 20%) to obtain the title compound (375 mg, 54%) in a white solid form.

Provenance & Evidence