HCID 86602919, compound → 736967-62-7

Participants

Reaction Steps

The compound (13.3 g, 10.3 mmol) synthesized in Example 2 (2g) was dissolved in 1% hydrochloric acid methanol solution (250 mL) and 20% palladium hydroxide-carbon (4 g) was added thereto, followed by stirring of the mixture under a hydrogen atmosphere for 2 hours. After the catalyst was removed by celite filtration, 28% ammonia water (5 mL) was added thereto and the mixture was stirred for 10 minutes. After the solvent was distilled off under reduced pressure and the residue was passed through ion exchange resin (Dowex 50w×8) column with water (200 mL), 1% ammonia water (200 mL) was flowed through. The ammonia water containing the desired compound was concentrated under reduced pressure and was purified using silica gel flash column chromatography (ethyl acetate:methanol:water, 5:2:1-1:1:1, V/V) to obtain the desired title compound (1.6 g, 35%) as a colorless solid.

Provenance & Evidence