反应详情

The title compound was prepared using a similar procedure as described in Example 1, Step 8, starting from (S)-2-amino-3-[4-(1,3,6-trimethyl-2,4-dioxo-1,2,3,4-tetrahydropyrimidin-5-yl)phenyl]propionic acid propyl ester (4.67 g, 13 mmol) , 4-bromo-2,6-difluorobenzoic acid (3.12 g, 13.16 mmol), HBTU (4.99 g, 13.16 mmol), and DIPEA (6.8 mL, 39 mmol), and after ISCO column chromatography purification, resulted in an amorphous off-white solid (6.71 g, 89%). ES-HRMS m/e calcd for C26H26BrF2N3O5 (M+H)+ 578.1097, found 578.1096.

1. customafter ISCO column chromatography purification