反应详情

温度

45 °C

To a mixture of 29 mg [2-(2,2-dimethylpropanoyl)-5-methoxy-1-benzofuran-3-yl]acetic acid from the Step B Example 1, 23 mg HOBt, and 38.3 mg EDC was added 1 mL dry DMF. Add 24.9 mg (3,3-dimethylbutyl)amine hydrochloride followed by 61 μL DIEA. This solution was heated at 45° C. for 2 hours. It was purified directly on RP-HPLC using 60-75% MeCN gradient. The fractions containing pure product were pooled and lyophilized to give the title compound. LC-MS: 4.08 min. (m/Z=290.1, 374.2, 396.2).

1. customIt was purified directly on RP-HPLC using 60-75% MeCN gradient
2. additionThe fractions containing pure product