反应 #3304971
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openreactiondata ↗doi:10.6084/m9.figshare.5104873.v1; patent:US08017610B2
反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.
实验步骤: 5-{3-[(1S)-2-Methoxy-1-methylethoxy]-5-[(triisopropylsilyl)oxy]phenyl}-1H-pyrrole-2-carboxylic acid (1.75 g, 3.91 mmol) synthesized in Example (106c) was dissolved in methanol (30 mL), and D-threoninol (1.00 g, 9.51 mmol) and 4-(4,6-dimethoxy-1,3,5-triazin-2-yl)-4-methylmorpholinium chloride n hydrate (2.85 g, 10.30 mmol) were added, followed by stirring at room temperature for 5 days under nitrogen atmosphere. After the solvent was distilled off under reduced pressure, a saturated aqueous ammonium chloride solution (50 mL) was added, and extraction was carried out with methylene chloride (80 mL). The organic layer was washed with saturated brine, and subsequently dried over anhydrous magnesium sulfate. The resulting residue was purified using silica gel column chromatography (elution solvent: methanol/methylene chloride=3%-7%) to afford the desired compound (1.76 g, yield 84%) as a white solid. After the solvent was distilled off under reduced pressure a saturated aqueous ammonium chloride solution (50 mL) was added extraction The organic layer was washed with saturated brine subsequently dried over anhydrous magnesium sulfate The resulting residue was purified silica gel column chromatography (elution solvent: methanol/methylene chloride=3%-7%)
来源 ID: ord-87930a49086640628220e524945c838a