benzyl (S)-1-((1S,2S,4R)-4-(tert-butyldimethylsilyloxy)-2-isopropylcyclohexyl)-2-oxopyrrolidin-3-ylcarbamate → benzyl (S)-1-((1S,2S,4R)-4-hydroxy-2-isopropylcyclohexyl)-2-oxopyrrolidin-3-ylcarbamate
反応式
[Si]([O:8][C@@H:9]1[CH2:14][CH2:13][C@H:12]([N:15]2[CH2:19][CH2:18][C@H:17]([NH:20][C:21](=[O:30])[O:22][CH2:23][C:24]3[CH:29]=[CH:28][CH:27]=[CH:26][CH:25]=3)[C:16]2=[O:31])[C@H:11]([CH:32]([CH3:34])[CH3:33])[CH2:10]1)(C(C)(C)C)(C)C>CC(O)=O.C1COCC1.O>[OH:8][C@@H:9]1[CH2:14][CH2:13][C@H:12]([N:15]2[CH2:19][CH2:18][C@H:17]([NH:20][C:21](=[O:30])[O:22][CH2:23][C:24]3[CH:25]=[CH:26][CH:27]=[CH:28][CH:29]=3)[C:16]2=[O:31])[C@H:11]([CH:32]([CH3:34])[CH3:33])[CH2:10]1参加物
3
実験手順
Benzyl (S)-1-((1S,2S,4R)-4-(tert-butyldimethylsilyloxy)-2-isopropylcyclohexyl)-2-oxopyrrolidin-3-ylcarbamate (1.0 g) was dissolved in a 4/1/1 mixture of AcOH/THF/H2O (60 mL). After 72 h, additional 4/1/1 mixture of AcOH/THF/H2O (30 mL) was added. This solution was stirred an additional 24 h before it was concentrated. The residue was dissolved in EtOAc and washed with saturated NaHCO3, dried (MgSO4), filtered, and concentrated in vacuo to afford benzyl (S)-1-((1S,2S,4R)-4-hydroxy-2-isopropylcyclohexyl)-2-oxopyrrolidin-3-ylcarbamate (750 mg). MS found: (M+H)+=375.3.