Methods and compounds effective in ameliorating conditions characterized by unwanted calcium channel activity, particularly unwanted N-type or T-type calcium channel activity are disclosed. Specifically, a series of isoxazole containing compounds are disclosed of the general formula (1) where Z is N or CHNR
3
and (Ar
1
)
2
CR
4
is optionally substituted benzhydryl.
Structure–activity relationships of diphenylpiperazine N-type calcium channel inhibitors
作者:Hassan Pajouhesh、Zhong-Ping Feng、Yanbing Ding、Lingyun Zhang、Hossein Pajouhesh、Jerrie-Lynn Morrison、Francesco Belardetti、Elizabeth Tringham、Eric Simonson、Todd W. Vanderah、Frank Porreca、Gerald W. Zamponi、Lester A. Mitscher、Terrance P. Snutch
DOI:10.1016/j.bmcl.2010.01.008
日期:2010.2
A novel series of compounds derived from the previously reported N-type calcium channel blocker NP118809 (1-(4-benzhydrylpiperazin-1-yl)-3,3-diphenylpropan-1-one) is described. Extensive SAR studies resulted in compounds with IC50 values in the range of 10-150 nM and selectivity over the L-type channels up to nearly 1200-fold. Orally administered compounds 5 and 21 exhibited both anti-allodynic and anti-hyperalgesic activity in the spinal nerve ligation model of neuropathic pain. (C) 2010 Elsevier Ltd. All rights reserved.