“…The reaction was quenched by adding MeOH and the mixture was concentrated under reduced pressure. Chromatographic purification (14% acetone/hexanes) afforded the title compound as a colorless oil (32, 11.8 47,72.5,72.21,72.19,66.6,55.2 (2 Cs),55.1,41.9,41.7,41.2,40.9,40.7,40.6 (2 Cs),38.6,38.5,37.8,37.0,36.92,36.85,36.3,36.2,35.5,32.2,24.0,15. 1R,3R,5R)-3-(((1S,3R,5R)-3-(((1S,3R,5S) To a stirred solution of 32 (10.5 mg, 0.02 mmol) in pyridine (0.25 mL) at room temperature was added methanesulfonyl chloride (6.7 μL, 0.09 mmol). The reaction mixture was stirred at the same temperature for 11 h before it was diluted with ethyl acetate, washed with 1 N HCl and brine, dried over Na 2 SO 4 , and concentrated under reduced pressure.…”