反应详情

To a solution of 81 mg (0.18 mmol) of tert-butyl (2R,5R)-2-(4-amino-3-bromobenzyl)-5-[(R)-hydroxy(phenyl)methyl]pyrrolidine-1-carboxylate (i-80b) and (2-amino-1,3-thiazol-4-yl)acetic acid (45 mg, 0.18 mmol) in 2.0 mL anhydrous DMF was added HOBt (31 mg, 0.23 mmol) followed by EDC (45 mg) and DIEA (0.16 mL, 0.88 mmol). The resulting mixture was stirred at room temperature under nitrogen atmosphere for 16 h. The mixture was washed with water and extracted with dichloromethane (2×2 mL). The organics were combined, dried over sodium sulfate, filtered and concentrated in vacuum. The residue was purified by Gilson reverse phase HPLC eluting with a gradient of 10-90% acetonitrile in water with 0.05% TFA buffer to afforded the product (75 mg, 81%). m/z (ES) 601(M)+ and 603 (M+2)+, also 623 (MNa)+and 625 (MNa+2)+.

1. washThe mixture was washed with water
2. extractionextracted with dichloromethane (2×2 mL)
3. dry with materialdried over sodium sulfate
4. filtrationfiltered
5. concentrationconcentrated in vacuum
6. customThe residue was purified by Gilson reverse phase HPLC
7. washeluting with a gradient of 10-90% acetonitrile in water with 0.05% TFA buffer