Phenacyl bromide → (R)-3-((R)-2-(benzyloxycarbonylamino)-2-phenylacetoxy)-1-(2-oxo-2-phenylethyl)-1-azoniabicyclo[2.2.2]octane bromide
反応式
[CH2:1]([O:8][C:9]([NH:11][C@H:12]([C:24]1[CH:29]=[CH:28][CH:27]=[CH:26][CH:25]=1)[C:13]([O:15][C@@H:16]1[CH:21]2[CH2:22][CH2:23][N:18]([CH2:19][CH2:20]2)[CH2:17]1)=[O:14])=[O:10])[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.[Br:30][CH2:31][C:32]([C:34]1[CH:39]=[CH:38][CH:37]=[CH:36][CH:35]=1)=[O:33]>CCOC(C)=O>[Br-:30].[CH2:1]([O:8][C:9]([NH:11][C@H:12]([C:24]1[CH:29]=[CH:28][CH:27]=[CH:26][CH:25]=1)[C:13]([O:15][C@@H:16]1[CH:21]2[CH2:20][CH2:19][N+:18]([CH2:31][C:32](=[O:33])[C:34]3[CH:39]=[CH:38][CH:37]=[CH:36][CH:35]=3)([CH2:23][CH2:22]2)[CH2:17]1)=[O:14])=[O:10])[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1参加物
4
実験手順
To a solution of (R)—((R)-quinuclidin-3-yl) 2-(benzyloxy-carbonylamino)-2-phenylacetate (40 mg, 0.10 mmol) in EtOAc (3 ml), 2-bromo-1-phenylethanone (22.2 mg, 0.11 mmol) was added and the reaction was stirred at RT for 15 hours, and then the solvent was evaporated. The crude was purified by silica gel flash chromatography (DCM/MeOH=93/7) to obtain (R)-3-((R)-2-(benzyloxycarbonylamino)-2-phenylacetoxy)-1-(2-oxo-2-phenylethyl)-1-azoniabicyclo[2.2.2]octane bromide (45.0 mg; 74.8% yield).