反应详情

Triphenylphosphine (2.82 g, 10.7 mmol) was added to a solution of 2-(1,2,3-triazol-1-yl)ethanol (609 mg, 5.4 mmol), (J. Antib. 1993, 46, 177), and 7-hydroxy-6-methoxy-3-((pivaloyloxy)methyl)-3,4-dihydroquinazolin-4-one (1.1 g, 3.6 mmol), (prepared as described for the starting material in Example 7), in methylene chloride (70 ml), diethyl azodicarboxylate (600 μl, 10.7 mmol) was then added. After stirring for 2 hours at ambient temperature, the volatiles were removed by evaporation and the residue was purified by column chromatography eluting with methylene chloride/methanol (98/2) to give 6-methoxy-3-((pivaloyloxy)methyl)-7-(2-(1,2,3-triazol-1-yl)ethoxy)-3,4-dihydroquinazolin-4-one (4 g, 97%).

1. custom(prepared
2. customthe volatiles were removed by evaporation
3. customthe residue was purified by column chromatography
4. washeluting with methylene chloride/methanol (98/2)