反応式
[C:1]([S:4][CH2:5][C@H:6]1[CH2:15][CH2:14][CH2:13][CH2:12][CH2:11][CH2:10][C@H:9]([C:16](N2[C@H](CC3C=CC=CC=3)COC2=O)=[O:17])[NH:8][C:7]1=[O:31])(=[O:3])[CH3:2].[OH2:32].[OH-].[Li+]>O1CCCC1.O>[C:1]([S:4][CH2:5][C@H:6]1[CH2:15][CH2:14][CH2:13][CH2:12][CH2:11][CH2:10][C@H:9]([C:16]([OH:17])=[O:32])[NH:8][C:7]1=[O:31])(=[O:3])[CH3:2]参加物
反応条件
- 温度
- 0 °C
実験手順
The more polar major chiral isomer of N-[[trans 3-(acetylthiomethyl)-2-oxo-1-azacyclodecan-10-yl]-carbonyl]-(R)-4-benzyl-2-oxazolidinone (1.23 g, 2.75 mmol) is dissolved in tetrahydrofuran (45.0 mL) and water (15.0 mL), and the reaction is cooled to 0° C. Lithium hydroxide hydrate (0.116 g, 2.75 mmol) is added, and the reaction is stirred at 0° C. for 45 minutes. The solvent is then evaporated, and the residue is partitioned between saturated sodium bicarbonate and methylene chloride. The aqueous layer is extracted several times with methylene chloride, and then the aqueous layer is acidified with 2.5N hydrochloric acid to pH=3. The aqueous layer is extracted several times with ethyl acetate, the combined organic layers dried (MgSO4) and the solvent is evaporated, to give one enantiomer of trans 3-(acetylthiomethyl)-2-oxo-1-azacyclodecane-10-carboxylic acid, m.p. 144°-145° C.; [α]D +88.36° (c=6.9 mg/ml, CH2Cl2), which is assigned the 3R, 10S configuration.
後処理
- customThe solvent is then evaporated
- customthe residue is partitioned between saturated sodium bicarbonate and methylene chloride
- extractionThe aqueous layer is extracted several times with methylene chloride
- extractionThe aqueous layer is extracted several times with ethyl acetate
- dry with materialthe combined organic layers dried (MgSO4)
- customthe solvent is evaporated
出典と根拠
- ORDレコード
- ord-51facc078c07490180ad0130c32a4110
- 出典データセット
- uspto-grants-1995_06
- 特許番号
- US05426103
関連ノート
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