Hydrochloric Acid → HCID 23116272, compound

Participants

Reaction Steps

Compound 8 (0.18 g, 0.53 mmol) obtained in Example 8 was dissolved in methanol (1.5 mL), and a 2 mol/L aqueous solution of sodium hydroxide (1.5 mL) was added thereto. The mixture was stirred at room temperature for 6 hours, and then stirred at 50° C. for 1.5 hours. After cooling to room temperature, the reaction mixture was made acidic by addition of 4 mol/L hydrogen chloride (3.0 mL), followed by extraction with chloroform (50 mL×3). The organic layer was dried over anhydrous sodium sulfate and then concentrated under reduced pressure to obtain 2-ethyl-3,5-dihydroxy-6-(4-methoxybenzoyl)phenylacetic acid (0.17 g, 0.52 mmol).

Provenance & Evidence