Acetohydrazide → HCID 66683024, compound

5-{3-[4-(Azetidin-1-ylcarbonyl)-2-fluorophenoxy]-5-[(1S)-2-methoxy-1-methylethoxy]phenyl}-1H-pyrrole-2-carboxylic acid (126 mg, 0.27 mmol) synthesized in Example (66g) and acetohydrazide (40 mg, 0.54 mmol) were dissolved in dichloromethane (5 mL), and HATU (153 mg, 0.40 mmol) and N,N-diisopropylethylamine (70 μL, 0.40 mmol) were added at room temperature, followed by stirring under nitrogen atmosphere for 1 hour. The reaction solution was diluted with dichloromethane (60 mL), washed with 1N hydrochloric acid, a saturated aqueous sodium hydrogencarbonate solution and saturated brine, and subsequently dried over anhydrous magnesium sulfate. The solvent was distilled off under reduced pressure, and the resulting residue was purified using silica gel column chromatography (elution solvent: methanol/dichloromethane=5%) to afford the desired product (87 mg, yield 62%) as a white solid.

1. washwashed with 1N hydrochloric acid
2. dry with materiala saturated aqueous sodium hydrogencarbonate solution and saturated brine, and subsequently dried over anhydrous magnesium sulfate
3. distillationThe solvent was distilled off under reduced pressure
4. customthe resulting residue was purified
5. washsilica gel column chromatography (elution solvent: methanol/dichloromethane=5%)

ORD record

ord-09c0dea539ec4907810c04b918cd47f2

Source dataset

uspto-grants-2011_09

DOI

10.6084/m9.figshare.5104873.v1

Patent number

US08017610B2