A class of substituted azetidine, pyrrolidine and piperidine derivatives are selective agonists of 5-HT.sub.1 -like receptors, being potent agonists of the human 5-HT.sub.1D.alpha. receptor subtype whilst possessing at least a 10-fold selective affinity for the 5-HT.sub.1D.alpha. receptor subtype relative to the 5-HT.sub.1D.beta. subtype; they are therefore useful in the treatment and/or prevention of clinical conditions, in particular migraine and associated disorders, for which a subtype-selective agonist of 5-HT.sub.1D receptors is indicated, whilst eliciting fewer side-effects, notably adverse cardiovascular events, than those associated with non-subtype-selective 5-HT.sub.1D receptor agonists.
[EN] SYNTHETIC PROCESS<br/>[FR] PROCÉDÉ DE SYNTHÈSE
申请人:UNIV LIVERPOOL
公开号:WO2015145143A1
公开(公告)日:2015-10-01
The present invention relates to a process for preparing substituted piperidine compounds and especially chiral substituted piperidine compounds. The process involves reacting a substituted pyridinium ion with an amine as defined herein, in the presence of a hydrogen donor, a catalysts and a suitable solvent.
Chiralpiperidines are widespread in natural products and drug molecules. However, effective methods for their synthesis from simple starting materials are scarce. Herein, we report a rhodium-catalysed reductive transamination reaction for the rapid preparation of a variety of chiralpiperidines and fluoropiperidines from simple pyridinium salts, with excellent diastereo- and enantio-selectivities
The present invention relates to a process for preparing substituted piperidine compounds and especially chiral substituted piperidine compounds. The process involves reacting a substituted pyridinium ion with an amine as defined herein, in the presence of a hydrogen donor, a catalysts and a suitable solvent.