Journal
BIOORGANIC & MEDICINAL CHEMISTRY
Volume 12, Issue 5, Pages 979-993Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.bmc.2003.12.011
Keywords
amides; alcohols; ion channel; calcium channel
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Themisone, also known as Atrolactamide, was found, in the 1950s, to be a very potent anticonvulsant. It was hypothesized that the -CF3 substitution would maintain the anticonvulsant activity. Anticonvulsant testing of our novel compounds by the National Institute of Health's Anticonvulsant Screening Project of the Antiepileptic Drug Discovery Program identified analogue 1, 3,3,3-trifluoro-2-hydroxy-2-phenyi-propionamide, to have potent anticonvulsant activity (MES ED50 of 9.9 mg/kg, ScMET ED50 of 34 mg/kg and TD50 of 100 mg/kg). Therefore, a diverse range of analogues were synthesized utilizing multiple synthetic pathways to explore the structure-activity relationship. Patch clamp electrophysiology experiments demonstrate that compound 1 is an effective T-type calcium channel blocker. Altogether, these results suggest these compounds as a class of orally available anticonvulsants. (C) 2003 Published by Elsevier Ltd.
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