Optically pure paroxetine precursors
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United States of America Patent
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Issued Date -
Aug 26, 2004
app pub date -
Dec 18, 2003
filing date -
Dec 18, 2002
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Abandoned
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Abstract
A biocatalytic process to obtain optically enriched precursors of trans-4-(4-fluorophenyl)-3-hydroxymethylpiperidines, based on the enzymatic resolution of racemic derivatives of general formula III (where R.sup.3 is preferably phenyl or benzyl) using cyclic anhydrides or the Meldrum's acid (2,2-dimethyl-1,3-dioxane-4,6-dione) as acylating agents of the hydroxyl group. Depending on the enzyme and the chosen reaction conditions, either of the two enantiomers may be obtained with high enantiomeric purity. These compounds are important intermediates in the synthesis of the paroxetine anti-depressive agent.
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