反应详情

To a suspension of 219 (50 mg, 0.145 mmol) in THF (1.5 mL) was added 2-cyclohexylacetyl isothiocyanate (40 mg, 0.22 mmol) [P. A. S. Smith and R. O. Kan. J. Org. Chem., 1964, 2261] and the reaction mixture was stirred for 3 hours transferred onto a flash chromatography column and eluted with EtOAc-MeOH mixture (19:1), to afford title compound 220a (27.5 mg, 31% yield) as a light yellow solid. Characterization of 220a is provided in the table 21.

1. washeluted with EtOAc-MeOH mixture (19:1)