- Facile syntheses of the three major metabolites of thioridazine
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Efficient, mild syntheses of the three major metabolites 2-4 of the important antipsychotic drug thioridazine (1) have been developed. The cardiotoxic metabolite 2 with a ring sulfoxide moiety was prepared in 96% yield by oxidation of 1 with NaIO4 under acidic conditions. Four different procedures were elaborated for the selective side-chain sulfide oxidation of 1 to mesoridazine (3), giving rise to yields of up to 91%. Finally, sulforidazine (4) was synthesised via oxidation of the sulfoxide 3 in the presence of either KMnO4 or t-BuOOH under basic conditions. Except for the oxidation with t-BuOOH. all reactions took place under mild conditions within a few minutes, were nicely reproducible, and afforded medium-to-high yields of the desired products, which could be readily purified by column chromatography.
- Morrow, Ryan J.,Millership, Jeff S.,Collier, Paul S.
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p. 962 - 967
(2007/10/03)
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