An efficient synthesis of new 1-H-4′-methyl-3′,4′-dihydrospiro[piperidine-4,2′(1′H)quinoline] scaffolds
摘要:
Efficient synthesis of new 3',4'-dihydrospiro[piperidine-4,2'(1'H)quinolines] by a four step synthetic route based on 1-benzyl-4-piperidone reactivity is reported. (c) 2007 Elsevier Ltd. All rights reserved.
A series of 4-amino-piperidine containing molecules have been synthesized and structure-affinity relationship toward the M3-muscarinic receptor has been investigated. Chemical modulations provided molecules with K-i for the human M3-R up to 1 nM with variable selectivity (3- to 40-fold) over the human M2-R. Compounds 2 (pA(2) = 8.3, 8.6) demonstrates in vitro on guinea pig bladder and ileal strips potent anticholinergic properties and tissue selectivity. (C) 2002 Elsevier Science Ltd. All rights reserved.