反应详情

To a solution of 4-(5,6-dimethoxy-3-methyl-1,4-benzoquinon-2-ylmethyl)benzoic acid (50 mg, 0.16 mmol) obtained in Example 21 and piperidine (0.021 ml, 0.21 mmol) in methylene chloride (2 ml) was added 1-ethyl-3-(3-dimethylaminopropyl)carbodiimide hydrochloride (46 mg, 0.24 mmol), and then the mixture was stirred at room temperature for 1 hour. The reaction mixture was concentrated under reduced pressure and was purified by a silica gel column chromatography (hexane:ethyl acetate=1:2) to yield the title compound (30 mg, 0.08 mmol, yield 50%).

1. concentrationThe reaction mixture was concentrated under reduced pressure
2. customwas purified by a silica gel column chromatography (hexane:ethyl acetate=1:2)