反応式
[O:1]1[CH:5]=[N:4][N:3]=[C:2]1[C:6]1[CH:7]=[N:8][CH:9]=[CH:10][CH:11]=1.[Li]CCCC.[N:17]#N.CCOCC.[C:24]([C@:31](N)([CH2:34][CH3:35])[CH:32]=[O:33])([O:26][C:27]([CH3:30])([CH3:29])[CH3:28])=[O:25]>C1COCC1.CN(P(N(C)C)(N(C)C)=O)C>[C:24]([CH:31]([CH2:34][CH3:35])[C@@:32]([NH2:17])([C:5]1[O:1][C:2]([C:6]2[CH:7]=[N:8][CH:9]=[CH:10][CH:11]=2)=[N:3][N:4]=1)[OH:33])([O:26][C:27]([CH3:30])([CH3:29])[CH3:28])=[O:25]参加物
8
反応物 5
生成物 1
試薬・触媒・溶媒 2
反応条件
- 温度
- -45 °C
実験手順
To a stirred solution of the 3-[1,3,4]oxadiazol-2-yl-pyridine (5 g, 34 mmol) in THF (100 mL) was added HMPA (5 mL) and n-BuLi (1.6 M solution in hexane, 21.25 mL) drop wise under N2 at −78° C. After 1 h, MgBr.Et2O (8.77 g, 34 mmol) was added and the reaction mixture was allowed to warm to −45° C. for 1 h before being treated with (S)-2-Boc-amino-butyraldehyde (4.22 g, 22.1 mmol) in THF (20 mL). The reaction mixture was stirred for 1 h, quenched with saturated NH4Cl, and extracted with ethyl acetate. The organic layer was washed with brine, dried with MgSO4 and concentrated. The residue was purified with silica gel column chromatography to yield (S)-2-Boc-amino-1-(5-pyridin-3-yl-[1,3,4]oxadiazol-2-yl)-butan-1-ol (1.5 g).
後処理
- customquenched with saturated NH4Cl
- extractionextracted with ethyl acetate
- washThe organic layer was washed with brine
- dry with materialdried with MgSO4
- concentrationconcentrated
- customThe residue was purified with silica gel column chromatography
出典と根拠
- ORDレコード
- ord-46d6204d4526469fb0b3091387b9ca61
- 出典データセット
- uspto-grants-2006_09
- 特許番号
- US07101880B2
関連ノート
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