反应详情

A solution of methyl (E)-3-[2-n-butyl-1-{(2-chlorophenyl)methyl}-1H-imidazol-5-yl]-2-(5-methyl-2-furyl)methyl-2-propenoate (Example 6, Method A) (1.5 mmol) in dry tetrahydrofuran (10 mL) held at -78° C. under argon is treated dropwise with a solution of diisobutyl aluminum hydride in toluene (3.30 mmol, 2.2 mL of 1.5M). The mixture is allowed to warm to ambient temperature and stirred an additional 17 hours. Excess reducing agent is quenched with methanol and water, dilute acetic acid and methylene dichloride are added, and the organic layer is washed with sodium bicarbonate solution, dried and concentrated to give the title compound.

1. customheld at -78° C. under argon
2. customis quenched with methanol and water, dilute acetic acid and methylene dichloride
3. additionare added
4. washthe organic layer is washed with sodium bicarbonate solution
5. customdried
6. concentrationconcentrated