Characterization of the anticonvulsant profile of valpromide derivatives
摘要:
The antiepileptic activity of nine derivatives of valpromide is discussed. They comply with a pharmacophore model that establishes the essential structural and electronic features responsible for the protection against the MES test. The model results from the comparison of 17 structures, using density functional methodologies combined with an active analog approach. The derivatives of valpromide have been tested for anticonvulsant activity in mice. These compounds displayed a phenytoin-like profile, being active in the MES test and inactive in the PTZ test. 4-(Valproylamido)benzenesulfonamide is the most active compound, with an ED50 of 53 mumol/kg and no neurotoxicity at doses up to 1000 mumol/kg. The pharmacological behavior of the drugs points to a sodium channel blocking effect as one of the associated mechanisms. This mechanism was tested positive for N-ethylvalpromide through its competition with the binding of [H-3]batrachotoxin-A-20alpha-benzoate to the voltage-dependent sodium channels from rat brain synaptosomes. (C) 2004 Elsevier Ltd. All rights reserved.
Benoit Guyod; Benoit Guyod; Simiand, European Journal of Medicinal Chemistry, 1974, vol. 9, # 2, p. 169 - 174
作者:Benoit Guyod、Benoit Guyod、Simiand、Boucherle
DOI:——
日期:——
Characterization of the anticonvulsant profile of valpromide derivatives
作者:Silvina M Tasso、Sung Ch Moon、Luis E Bruno-Blanch、Guillermina L Estiú
DOI:10.1016/j.bmc.2004.05.003
日期:2004.7
The antiepileptic activity of nine derivatives of valpromide is discussed. They comply with a pharmacophore model that establishes the essential structural and electronic features responsible for the protection against the MES test. The model results from the comparison of 17 structures, using density functional methodologies combined with an active analog approach. The derivatives of valpromide have been tested for anticonvulsant activity in mice. These compounds displayed a phenytoin-like profile, being active in the MES test and inactive in the PTZ test. 4-(Valproylamido)benzenesulfonamide is the most active compound, with an ED50 of 53 mumol/kg and no neurotoxicity at doses up to 1000 mumol/kg. The pharmacological behavior of the drugs points to a sodium channel blocking effect as one of the associated mechanisms. This mechanism was tested positive for N-ethylvalpromide through its competition with the binding of [H-3]batrachotoxin-A-20alpha-benzoate to the voltage-dependent sodium channels from rat brain synaptosomes. (C) 2004 Elsevier Ltd. All rights reserved.