反应详情

A solution of lithium hydroxide monohydrate (10.6 mg, 0.25 mmol) in water (1 mL) was added to a solution of (Z)-3-(4-bromophenyl)-2-[[2-chloro-4-[[(3-hydroxybenzyl)amino]carbonyl]benzoyl]amino]propenoic acid methyl ester (Example 224; 69 mg, 0.13 mmol) in tetrahydrofuran/methanol/water (3:1:1; 1.5 ml). The mixture was stirred for 4 h at room temperature and then acidified. The product was filtered off and purified by HPLC (Waters system) to give (Z)-3-(4-bromophenyl)-2-[[2-chloro-4-[[(3-hydroxybenzyl)amino]carbonyl]benzoyl]amino]propenoic acid (33 mg, 49% yield).

1. filtrationThe product was filtered off
2. custompurified by HPLC (Waters system)