Synthesis and SAR of 1,2-trans-(1-hydroxy-3-phenylprop-1-yl)cyclopentane carboxamide derivatives, a new class of sodium channel blockers
摘要:
Novel cyclopentane-based 3-phenyl-1-hydroxypropyl compounds were evaluated for inhibitory activity against the peripheral nerve sodium channel Na(v)1.7 and off-target activity against the cardiac potassium channel hERG. The stereochemistry of the hydroxyl group and substitution on the phenyl rings with either fluorinated O-alkyl or alkyl groups were found to be critical, for conferring potency against Na(v)1.7. A benchmark compound from this series displayed efficacy in rat models of inflammatory and neuropathic pain. (C) 2005 Elsevier Ltd. All rights reserved.
The UV irradiation of 1-cyclopentenyl phenethyl ketone in benzene or methanol gave a cyclobutane derivative. The irradiation of 1-cyclohexenyl phenethyl ketone in methanol or in benzene containing either BF3–Et2O or CF3COOH gave a cycloheptanone derivative. The formation of the cycloheptanone derivative requires an acid catalyst.
Synthesis and SAR of 1,2-trans-(1-hydroxy-3-phenylprop-1-yl)cyclopentane carboxamide derivatives, a new class of sodium channel blockers
作者:Dong Ok、Chunshi Li、Catherine Abbadie、John P. Felix、Michael H. Fisher、Maria L. Garcia、Gregory J. Kaczorowski、Kathryn A. Lyons、William J. Martin、Birgit T. Priest、McHardy M. Smith、Brande S. Williams、Matthew J. Wyvratt、William H. Parsons
DOI:10.1016/j.bmcl.2005.11.051
日期:2006.3
Novel cyclopentane-based 3-phenyl-1-hydroxypropyl compounds were evaluated for inhibitory activity against the peripheral nerve sodium channel Na(v)1.7 and off-target activity against the cardiac potassium channel hERG. The stereochemistry of the hydroxyl group and substitution on the phenyl rings with either fluorinated O-alkyl or alkyl groups were found to be critical, for conferring potency against Na(v)1.7. A benchmark compound from this series displayed efficacy in rat models of inflammatory and neuropathic pain. (C) 2005 Elsevier Ltd. All rights reserved.
Installation of a Chiral Side Chain to a 2-Alkylidene-1-cycloalkan-1-ol Unit by Using Allylic Substitution
作者:Chao Feng、Yuichi Kobayashi
DOI:10.1002/ejoc.201300792
日期:2013.10
The allylicsubstitution of optically active exocyclic allylic esters of cyclopentane and cyclohexane with ArMgBr-based copper reagents (Ar = aryl) was examined. ArMgBr/Cu(acac)2 in a 2:1 ratio was an adequate reagent to produce the anti-SN2′ products efficiently in terms of regioselectivity (95–99 %), chirality transfer (91–99 %), and yield (71–91 %). The Ar groups that were successfully installed