| http://www.w3.org/ns/prov#value | - The anion of the sulfone (35) side chain fragment is generated by treatment of the sulfone with a strong base, such as lithium diethylamide, n-butyl lithium or methyl or ethyl magnesium bromide (or similar Grignard reagent) in an ether or hydrocarbon solvent, and to this solution of sulfone anion the steroid aldehyde (compound 4) as an ether or hydrocarbon solution is then added.
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