Synthesis of a Series of 4-Benzyloxyaniline Analogues as Neuronal N-Type Calcium Channel Blockers with Improved Anticonvulsant and Analgesic Properties
摘要:
In this article, the rationale for the design, synthesis, and biological evaluation of a series of N-type voltage-sensitive calcium channel (VSCC) blockers is described. N-Type VSCC blockers, such as ziconotide, have shown utility in several models of stroke and pain. Modification of the previously reported lead, 1a, led to several 4-(4-benzyloxylphenyl)piperidine structures with potent in vitro and in vivo activities. In this series, the most interesting compound, (S)-2-amino- 1-{4-[(4-benzyloxy-phenyl)-(3-methyl-but-2-enyl)-amino]-piperidin-1-yl}-4-methyl-pentan-1-one (11), blocked N-type calcium channels (IC50 = 0.67 mu M in the IMR32 assay) and was efficacious in the audiogenic DBA/2 seizure mouse model (ED50 = 6 mg/kg, iv) as well as the antiwrithing model (ED50 = 6 mg/kg, iv). Whole-cell voltage-clamp electrophysiology experiments demonstrated that compound 11 blocked N-type Ca2+ channels and Na+ channels in superior cervical ganglion neurons at similar concentrations. Compound 11, which showed superior in vivo efficacy, stands out as an interesting lead for further development of neurotherapeutic agents in this series.
The present invention provides compounds that block calcium channels having formula (I). The present invention also provides methods of using the compounds of formula (I) to treat stroke, cerebral ischemia, head trauma, or epilepsy and to pharmaceutical compositions that contain the compounds of formula (I).
[EN] ANILINE DERIVATIVES AS CALCIUM CHANNEL BLOCKERS<br/>[FR] DERIVES D'ANILINE UTILISES EN TANT QU'INHIBITEURS CALCIQUES
申请人:WARNER-LAMBERT COMPANY
公开号:WO1999007689A1
公开(公告)日:1999-02-18
(EN) The present invention provides compounds that block calcium channels having formula (I). The present invention also privides methods of using the compounds of formula (I) to treat stroke, cerebral ischemia, head trauma, or epilepsy and to pharmaceutical compositions that contain the compounds of formula (I).(FR) L'invention concerne des composés inhibiteurs calciques, de formule (I). Elle se rapporte également à des procédés d'utilisation desdits composés de formule (I) pour le traitement de l'attaque, de l'ischémie cérébrale, du traumatisme crânien ou de l'épilepsie, et à des compositions pharmaceutiques contenant les composés de formule (I).
The present invention provides compounds that block calcium channels having the Formula I shown below.
1
The present invention also provides methods of using the compounds of Formula I to treat stroke, cerebral ischemia, head trauma, or epilepsy and to pharmaceutical compositions that contain the compounds of Formula I.