Benzyl Bromide → N-t-Butoxycarbonyl Statine benzyl ester

반응식

[C:1]([NH:8][C@H:9]([C@H:14]([CH2:16][C:17](=[O:19])[OH:18])[OH:15])[CH2:10][CH:11]([CH3:13])[CH3:12])([O:3][C:4]([CH3:7])([CH3:6])[CH3:5])=[O:2].C(=O)([O-])[O-].[K+].[K+].[CH2:26](Br)[C:27]1[CH:32]=[CH:31][CH:30]=[CH:29][CH:28]=1>CN(C)C=O>[CH2:26]([O:19][C:17](=[O:18])[CH2:16][C@H:14]([OH:15])[C@H:9]([CH2:10][CH:11]([CH3:13])[CH3:12])[NH:8][C:1]([O:3][C:4]([CH3:6])([CH3:7])[CH3:5])=[O:2])[C:27]1[CH:32]=[CH:31][CH:30]=[CH:29][CH:28]=1

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실험 절차

Boc-Statine, 8.83 g., was dissolved in dry dimethylformamide and treated at 25° C. for 4.5 hours with 4.43 g. potassium carbonate and 3.81 ml. benzyl bromide. The mixture was concentrated in vacuo, 500 ml. ethyl acetate was added and the suspension was washed with saturated aqueous lithium chloride (2×50 ml.), water (5×50 ml.), dried magnesium sulfate, filtered and concentrated to give 11.8 g. of a yellow syrup which was used without further purification.