Triethylamine → 2-{4-[(1-Cyclopentylpiperidin-4-yl)oxy]phenyl}-3-methylpyrido[3,4-d]pyrimidin-4(3H)-one

Participants

Reaction Steps

6-Chloro-2-{4-[(1-cyclopentylpiperidin-4-yl)oxy]phenyl}-3-methylpyrido[3,4-d]pyrimidin-4(3H)-one (11 mg, 0.025 mmol) produced in Example 30 and triethylamine (17 μL, 0.15 mmol) were dissolved in ethyl acetate (0.5 mL), and 10% palladium-carbon (3 mg) was added thereto and stirred in a hydrogen atmosphere at room temperature for 15 hours. The reaction solution was filtered through Celite, then the Celite was washed with ethyl acetate, and the mother liquid was concentrated. The residue was purified through silica gel thin-layer chromatography (chloroform/methanol=9/1) to obtain the entitled compound (7.3 mg, 71%) as a pale brown solid.

Provenance & Evidence