HCID 57563580, compound → HCID 23016844, compound

Participants

Reaction Steps

To a solution of the compound prepared in Example 36 (300 mg) in methanol (3 ml) was added 10% palladium carbon (30 mg) and the mixture was stirred at room temperature overnight under an atmosphere of hydrogen. The reaction mixture was filtered through cellite (trade mark) and then the filtrate was concentrated. To a solution of the residue in THF were added 1N aqueous solution of sodium hydroxide (2 ml) and methanol (2 ml) and the mixture was stirred at room temperature overnight. The reaction solution was neutralized with 1N hydrochloric acid and then extracted with ethyl acetate. The organic layer was washed with water and a saturated aqueous solution of sodium chloride, dried over anhydrous magnesium sulfate and concentrated. The residue was purified by column chromatography on silica gel to give the title compound (220 mg) having the following physical data.

Provenance & Evidence