反应详情

From pivalic acid (R)-6-[2-(ethoxycarbonylmethylamino)-4-methoxyphenyl]-5,6,7,8-tetrahydronaphthalen-2-yl ester (150 mg) and 4-benzyloxycarbonylmethylbenzoic acid (138 mg), according to an analogous synthetic method to Preparation Example 154, obtained was pivalic acid (R)-6-{2-[(4-benzyloxycarbonylmethylbenzoyl)ethoxycarbonylmethylamino]-4-methoxyphenyl}-5,6,7,8-tetrahydronaphthalen-2-yl ester (200 mg). A solution thereof in methanol (5 ml) was subjected to a catalytic reduction in the presence of 10% palladium-activated charcoal (40 mg) for 2 hours at room temperature under hydrogen atmosphere at ambient pressure. After filtration through celite pad, the solution was concentrated in vacuo to provide the title compound (170 mg).

1. customobtained
2. filtrationAfter filtration through celite pad
3. concentrationthe solution was concentrated in vacuo