[OH:1][CH2:2][C@H:3]1[CH2:8][CH2:7][C@H:6]([NH:9][C:10](=[O:16])[O:11][C:12]([CH3:15])([CH3:14])[CH3:13])[CH2:5][CH2:4]1.CC(OI1(OC(C)=O)(OC(C)=O)OC(=O)C2C=CC=CC1=2)=O>C(Cl)Cl>[CH:2]([C@H:3]1[CH2:4][CH2:5][C@H:6]([NH:9][C:10](=[O:16])[O:11][C:12]([CH3:14])([CH3:13])[CH3:15])[CH2:7][CH2:8]1)=[O:1]A solution of tert-butyl [trans-4-(hydroxymethyl)cyclohexyl]carbamate (from Aldrich, 0.61 g, 2.7 mmol) in methylene chloride (10 mL) at 0° C. was added Dess-Martin periodinane (1.35 g, 3.19 mmol). The resulting mixture was stirred at room temperature overnight. The reaction was quenched with aq. 1 N NaOH solution, extracted with dichloromethane. The combined organic layers were washed with water and brine, dried over MgSO4, and concentrated. The residue was purified on silica gel (eluting with 0 to 5% MeOH in dichloromethane) to give the desired product (0.3 g, 50%). LCMS calculated for C12H21NO3Na (M+Na)+: m/z=250.2. Found: 250.1.
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