The synthesis and preliminary pharmacological evaluation of 4-methyl fentanyl
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The synthesis of 4-methyl fentanyl, a prototype of a novel class of fentanyl analogues has been effected in 5 steps, starting from N-ethoxycarbonyl-4-piperidone (similar to 20% overall yield). In the key step, N-phenylation of secondary aliphatic amide intermediate was achieved by a novel reaction, using diphenyliodonium chloride for the phenyl group transfer. Preliminary pharmacological results indicate that 4-methyl fentanyl is a super potent narcotic analgesic, about four times more potent than fentanyl. (C) 2000 Elsevier Science Ltd. All rights reserved.
Source:Bioorganic and Medicinal Chemistry Letters, 2000, 10, 17, 2011-2014
- Pergamon-Elsevier Science Ltd, Oxford