Chlorambucil → HCID 131722767, compound

Participants

Reaction Steps

DIC (170 μl, 1.10 mmol) was added to a solution of chlorambucil (669 mg, 2.20 mmol) in dry dichloromethane (15 ml). The mixture was stirred at room temperature for 0.5 hour and added to a solution of cholesterol (387 mg, 1.00 mmol) and DMAP (122 mg, 1.00 mmol) in dichloromethane (10 ml). The reaction mixture was stirred overnight and then poured onto 5% sodium bicarbonate. The phases were separated and the organic phase was washed with brine and dried (MgSO4). The solution was filtered and concentrated and the product was purified by column chromatography (silica, chloroform) to give 560 mg (83%) of colouless oil. The product was characterised by MALDI mass spectrometry, giving M+H at 674 as expected. Further characterisation was carried out using 1H (500 MHz) and 13C (125 MHz) NMR analysis, giving spectra in accordance with the structure.

Provenance & Evidence