Dimethyl Sulfoxide → HCID 57251512, compound

Participants

Reaction Conditions

Reaction Steps

To a cooled solution (-78° C.) of oxalyl chloride added dimethyl sulfoxide dropwise, followed by a solution of 17-ethyl-1-hydroxy-12-[2'-(4"-hydroxy-3"-allyloxycyclohexyl)-1'-methylvinyl]-14-triisopropylsiloxy-23,25-dimethoxy-13,19,21,27-tetramethyl-11,28-dioxa-4-azatricyclo[22.3.1.04,9 ]octacos-18-ene-2,3,10,16-tetraone in dry methylene chloride. The reaction mixture is stirred for 30 min. at -78° C. and then triethylamine is added. The reaction mixture is allowed to rise to room temperature, poured into water, and extracted with ethyl acetate (three times). Combined organic layers are washed (water, sat'd NaHCO3), dried (anhydrous Na2SO4), and filtered. Removal of solvent followed by purification (silica gel column chromatography), gives the title compound.

Provenance & Evidence