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The methyl- and ethylsulphoxide diastereoisomers (V and VI) of the corticosteroid tipredane (INN, I) have been shown to undergo further stereoselective S-oxidation to yield diastereoisomeric disulphoxides (II).Interactive computer optimisation software was employed to develop semi-preparative chromatography conditions for the isolation of the disulphoxide diastereoisomers (II) and to develop a multiselective...
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