C([O:8][C:9]1[CH:10]=[C:11]([CH:27]=[C:28]([O:30][C@@H:31]([CH3:35])[CH2:32][O:33][CH3:34])[CH:29]=1)[C:12]([NH:14][C:15]1[CH:19]=[CH:18][N:17]([C:20]([O:22][C:23]([CH3:26])([CH3:25])[CH3:24])=[O:21])[N:16]=1)=[O:13])C1C=CC=CC=1>C1COCC1.C(O)C>[OH:8][C:9]1[CH:10]=[C:11]([CH:27]=[C:28]([O:30][C@@H:31]([CH3:35])[CH2:32][O:33][CH3:34])[CH:29]=1)[C:12]([NH:14][C:15]1[CH:19]=[CH:18][N:17]([C:20]([O:22][C:23]([CH3:26])([CH3:25])[CH3:24])=[O:21])[N:16]=1)=[O:13]A solution of tert-butyl 3-({3-(benzyloxy)-5-[(1S)-2-methoxy-1-methylethoxy]benzoyl}amino)-1H-pyrazole-1-carboxylate (23 g, 47.8 mmol) in THF (140 mL) and ethanol (140 mL) was evacuated and purged with nitrogen (×3). 10% Palladium on carbon (2.3 g, 10% w/w) was added and reaction mixture was evacuated and finally purged with hydrogen gas. Reaction mixture was left to stir at ambient temperature under a hydrogen balloon for 16-hours. Pd/C was filtered through diatomaceous earth and the filtrate concentrated in vacuo to give a white, foam (18 g, 97%).
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