278598-12-2Relevant articles and documents
Synthesis and in vitro biological evaluation of carbonyl group-containing inhibitors of vesicular acetylcholine transporter
Efange, Simon M. N.,Khare, Anil B.,Von Hohenberg, Krystyna,MacH, Robert H.,Parsons, Stanley M.,Tu, Zhude
experimental part, p. 2825 - 2835 (2010/08/05)
To identify selective high-affinity inhibitors of the vesicular acetylcholine transporter (VAChT), we have interposed a carbonyl group between the phenyl and piperidyl groups of the prototypical VAChT ligand vesamicol and its more potent analogues benzovesamicol and 5-aminobenzovesamicol. Of 33 compounds synthesized and tested, 6 display very high affinity for VAChT (K i, 0.25-0.66 nM) and greater than 500-fold selectivity for VAChT over σ1 and σ2 receptors. Twelve compounds have high affinity (Ki, 1.0-10 nM) and good selectivity for VAChT. Furthermore, 3 halogenated compounds, namely, trans-3-[4-(4-fluorobenzoyl) piperidinyl]-2-hydroxy-1,2,3,4-tetrahydronaphthalene (28b) (Ki = 2.7 nM, VAChT/sigma selectivity index = 70), trans-3-[4-(5-iodothienylcarbonyl) piperidinyl]-2-hydroxy-1,2,3,4-tetrahydronaphthalene (28h) (Ki = 0.66 nM, VAChT/sigma selectivity index = 294), and 5-amino-3-[4-(p-fluorobenzoyl) piperidinyl]-2-hydroxy-1,2,3,4,-tetrahydronaphthalene (30b) (Ki = 2.40 nM, VAChT/sigma selectivity index = 410) display moderate to high selectivity for VAChT. These three compounds can be synthesized with the corresponding radioisotopes so as to serve as PET/SPECT probes for imaging the VAChT in vivo.
COMPOUNDS USEFUL IN THE TREATMENT OF INFLAMMATORY DISEASES
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Page 27, (2010/02/08)
There are provided according to the invention, novel compounds of formula (I)wherein R, R, R, R, Rand Rare as defined in the specification, processes for preparing them, formulations containing them and their use in therapy for the treatment of inflammatory diseases.