[CH:1]1([S:4][C:5]2[CH:13]=[CH:12][C:8]([C:9]([NH2:11])=O)=[CH:7][CH:6]=2)[CH2:3][CH2:2]1.[H-].[Al+3].[Li+].[H-].[H-].[H-].O>C1COCC1>[CH:1]1([S:4][C:5]2[CH:13]=[CH:12][C:8]([CH2:9][NH2:11])=[CH:7][CH:6]=2)[CH2:2][CH2:3]1A solution of 4-cyclopropylsulfanyl-benzamide (preparation 63a, 137 mg, 0.71 mmol) in THF is added to lithium aluminium hydride (1 M in THF, 2.1 mL, 2.1 mmol) precooled at 0° C. The mixture is stirred at 0° C. for 1 h and then heated at reflux for 1 h. The mixture is cooled to room temperature and stirred for 1.5 h. Water is added, and the mixture is extracted twice with dichloromethane. The combined organic layers are dried over Na2SO4 and concentrated under reduced pressure. Yield: 75 mg (60% of theory); ESI mass spectrum: [M+H]+=180; r.t. HPLC: 0.51 min (X011_S03).
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