反応式
C[O:2][C:3](=[O:42])[CH2:4][C@H:5]1[C:9]2[CH:10]=[CH:11][C:12]([O:14][CH2:15][C:16]3[CH:17]=[C:18]([C:22]4[C:27]([CH3:28])=[CH:26][C:25]([O:29][CH2:30][CH2:31][CH2:32][S:33]([CH3:36])(=[O:35])=[O:34])=[CH:24][C:23]=4[CH2:37][O:38]C(=O)C)[CH:19]=[CH:20][CH:21]=3)=[CH:13][C:8]=2[O:7][CH2:6]1.CO.[OH-].[Na+].Cl>O.O1CCCC1>[OH:38][CH2:37][C:23]1[CH:24]=[C:25]([O:29][CH2:30][CH2:31][CH2:32][S:33]([CH3:36])(=[O:35])=[O:34])[CH:26]=[C:27]([CH3:28])[C:22]=1[C:18]1[CH:19]=[CH:20][CH:21]=[C:16]([CH2:15][O:14][C:12]2[CH:11]=[CH:10][C:9]3[C@H:5]([CH2:4][C:3]([OH:42])=[O:2])[CH2:6][O:7][C:8]=3[CH:13]=2)[CH:17]=1参加物
反応物 4
生成物 1
試薬・触媒・溶媒 2
反応条件
- 温度
- 50 °C
実験手順
To a solution of methyl[(3S)-6-({2′-(acetoxymethyl)-6′-methyl-4′-[3-(methylsulfonyl)propoxy]biphenyl-3-yl}methoxy)-2,3-dihydro-1-benzofuran-3-yl]acetate (1.11 g, 1.86 mmol) in a mixed solvent of methanol (4 mL) and tetrahydrofuran (8 mL) was added 2 M aqueous sodium hydroxide solution (2 mL), and the mixture was stirred at 50° C. for 2 hr. The reaction mixture was diluted with water, acidified with 1 M hydrochloric acid, and extracted with ethyl acetate. The extract was washed with saturated brine, dried over anhydrous magnesium sulfate, and concentrated under reduced pressure. The residue was purified by silica gel column chromatography (ethyl acetate:hexane=50:50-100:0) and preparative HPLC, and the obtained crystals were recrystallized from heptane-ethyl acetate to give the title compound (0.508 g, yield 51%) as colorless crystals.
後処理
- extractionextracted with ethyl acetate
- washThe extract was washed with saturated brine
- dry with materialdried over anhydrous magnesium sulfate
- concentrationconcentrated under reduced pressure
- customThe residue was purified by silica gel column chromatography (ethyl acetate:hexane=50:50-100:0) and preparative HPLC
- customthe obtained crystals were recrystallized from heptane-ethyl acetate
出典と根拠
- ORDレコード
- ord-29f681cbfaa74231b3a6cae360fd4ac2
- 出典データセット
- uspto-grants-2012_01
- 特許番号
- US08088821B2
関連ノート
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