反应详情

Analogously to Example 1, Process step 1, 33 mg (0.15 mmol) of tert-butyl (4-aminobenzyl)carbamate and 43 mg (0.15 mmol) of (2R,3S)-3-benzoylamino-2-hydroxy-3-phenylpropionic acid were dissolved in 1 ml of DCM and 1 ml of DMF and treated successively with 78 μl of DIPEA (0.45 mmol), 22.5 mg of HOAt (0.165 mmol) and 76.9 mg (0.165 mmol) of PyBrop. Without further work-up, the batch obtained was filtered and then purified using HPLC. The product-containing fractions were lyophilized.

1. customWithout further work-up, the batch obtained
2. filtrationwas filtered
3. custompurified