Lithium Hydroxide → L-796449
反応式
[Cl:1][C:2]1[CH:3]=[C:4]([CH2:31][C:32]([O:34]C)=[O:33])[CH:5]=[CH:6][C:7]=1[S:8][CH2:9][CH2:10][CH2:11][O:12][C:13]1[CH:27]=[CH:26][C:16]2[C:17]([C:20]3[CH:25]=[CH:24][CH:23]=[CH:22][CH:21]=3)=[CH:18][O:19][C:15]=2[C:14]=1[CH2:28][CH2:29][CH3:30].[OH-].[Li+]>CO>[Cl:1][C:2]1[CH:3]=[C:4]([CH2:31][C:32]([OH:34])=[O:33])[CH:5]=[CH:6][C:7]=1[S:8][CH2:9][CH2:10][CH2:11][O:12][C:13]1[CH:27]=[CH:26][C:16]2[C:17]([C:20]3[CH:25]=[CH:24][CH:23]=[CH:22][CH:21]=3)=[CH:18][O:19][C:15]=2[C:14]=1[CH2:28][CH2:29][CH3:30]参加物
4
実験手順
To a solution of methyl 3-chloro-4-(3-(3-phenyl-7-propylbenzofuran-6-yloxy)propylthio)-phenylacetate (3.72 g, 7.31 mmol) prepared in last step and aqueous lithium hydroxide(1.0M; 14.62 ml; 14.62 mmol) in methanol (25 ml) was refluxed for 1 hr. The mixture was partitioned between isopropyl acetate and pH4 buffer. The organic was dried over sodium sulfate. The solvent was removed under reduced pressure, and the residue was purified by chromatography (silica gel, 50% methylene chloride in hexane) to afford the title compound. M.P: 143° C. ESI-MS: m/e-495(M+1)