Abstract
A practical synthesis of the 3-phenolic precursor of MDL 100907, a selective 5-HT2A receptor antagonist, is described. The route was also applied to the enantiomeric series, thus affording the direct precursors of both 3-[11C]MDL 100907 and its enantiomer as ligands for positron emission tomography. Similar methodology was developed for the direct synthesis of MDL 100907 and its enantiomer, MDL 100009. The routes utilized classical optical resolution of the N-nor intermediates in at least 98% enantiomeric excess and easily afforded multigram amounts of the chiral precursors of a variety of N- and 3-O-substituted enantiomers.
MeSH terms
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Carbon Radioisotopes
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Fluorobenzenes / chemical synthesis*
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Fluorobenzenes / metabolism*
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Fluorobenzenes / pharmacokinetics
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Fluorobenzenes / pharmacology
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Isotope Labeling / methods
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Ligands
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Phenols
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Piperidines / chemical synthesis*
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Piperidines / metabolism*
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Piperidines / pharmacokinetics
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Piperidines / pharmacology
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Receptor, Serotonin, 5-HT2A
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Receptors, Serotonin / drug effects*
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Serotonin Antagonists / chemical synthesis*
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Serotonin Antagonists / pharmacology
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Stereoisomerism
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Tomography, Emission-Computed
Substances
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Carbon Radioisotopes
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Fluorobenzenes
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Ligands
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Phenols
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Piperidines
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Receptor, Serotonin, 5-HT2A
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Receptors, Serotonin
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Serotonin Antagonists
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volinanserin