Cholesterol → HCID 131722768, compound

Participants

Reaction Steps

DIC (510 μl ) was added to a solution of Boc-β-Ala-OH (1.25 g, 6.60 mmol) in dichloromethane (15 ml) under an inert atmosphere. The reaction mixture was stirred for 30 min and then transferred to a flask containing a solution of cholesterol (1.16 g, 3.00 mmol) and DMAP (367 mg, 3.00 mmol) in dichloromethane (15 ml). The reaction mixture was stirred for 2 h and then mixed with an aqueous solution of potassium hydrogensulphate. The phases were separated and the aqueous phase extracted with chloroform. The combined organic phases were washed with aqueous potassium hydrogensulphate and water and dried over MgSO4. After filtration and evaporation the crude product was chromatographed (silica, chloroform/methanol 99:1) to give 1.63 g (97%) of white solid. The structure was confirmed by 1H NMR (500 MHz).

Provenance & Evidence