N-propyl-2,2-diphenyl-2-hydroxyacetamide, a novel α-hydroxyamide with anticonvulsant, anxiolytic and antidepressant-like effects that inhibits voltage-gated sodium channels
摘要:
In patients with epilepsy, anxiety and depression are the most frequent psychiatric comorbidities but they often remain unrecognized and untreated.We report herein the antidepressant-like activity in two animal models, tail suspension and forced swimming tests, of six anticonvulsants alpha-hydroxyamides. From these, N-propyl-2,2-diphenyl-2-hydroxyacetamide (compound 5) emerged not only as the most active as anticonvulsant (ED50 = 2.5 mg/kg, MES test), but it showed the most remarkable antidepressant-like effect in the tail suspension and forced swimming tests (0.3-30 mg/kg, i.p.); and, also, anxiolytic-like action in the plus maze test (3-10 mg/kg, i.p.) in mice. Studies of its mechanism of action, by means of its capacity to act via the GABA(A) receptor ([H-3]-flunitrazepam binding assay); the 5-HT1A receptor ([H-3]-8-OH-DPAT binding assay) and the voltage-gated sodium channels (either using the patch clamp technique in hNa(v) 1.2 expressed in HEK293 cell line or using veratrine, in vivo) were attempted. The results demonstrated that its effects are not likely related to 5-HT1A or GABA(A)ergic receptors and that its anticonvulsant and antidepressant-like effect could be due to its voltage-gated sodium channel blocking properties.
Synthesis of α-Hydroxycarboxamides from Acetonides of α-Hydroxycarboxylic Acids and Primary Amines
作者:A. Khalaj、E. Nahid
DOI:10.1055/s-1985-31460
日期:——
The reaction of acetonides of α-hydroxycarboxylic acids with primary amines on heating provides a useful synthetic route to N-substituted α-hydroxycarboxamides. In general, formation of the α-hydroxycarboxamides is favored by the presence of only small substituents on the acetonide, by sufficient nucleophilicity of the amine, and by high-boiling aprotic solvents.
KHALAJ, A.;NAHID, E., SYNTHESIS, BRD, 1985, N 12, 1153-1155
作者:KHALAJ, A.、NAHID, E.
DOI:——
日期:——
N-propyl-2,2-diphenyl-2-hydroxyacetamide, a novel α-hydroxyamide with anticonvulsant, anxiolytic and antidepressant-like effects that inhibits voltage-gated sodium channels
作者:Valentina Pastore、Cristina Wasowski、Pedro Martin、Andrea Enrique、Josefina Higgs、Luis E. Bruno-Blanch、Veronica Milesi、Mariel Marder
DOI:10.1016/j.ejphar.2017.11.048
日期:2018.1
In patients with epilepsy, anxiety and depression are the most frequent psychiatric comorbidities but they often remain unrecognized and untreated.We report herein the antidepressant-like activity in two animal models, tail suspension and forced swimming tests, of six anticonvulsants alpha-hydroxyamides. From these, N-propyl-2,2-diphenyl-2-hydroxyacetamide (compound 5) emerged not only as the most active as anticonvulsant (ED50 = 2.5 mg/kg, MES test), but it showed the most remarkable antidepressant-like effect in the tail suspension and forced swimming tests (0.3-30 mg/kg, i.p.); and, also, anxiolytic-like action in the plus maze test (3-10 mg/kg, i.p.) in mice. Studies of its mechanism of action, by means of its capacity to act via the GABA(A) receptor ([H-3]-flunitrazepam binding assay); the 5-HT1A receptor ([H-3]-8-OH-DPAT binding assay) and the voltage-gated sodium channels (either using the patch clamp technique in hNa(v) 1.2 expressed in HEK293 cell line or using veratrine, in vivo) were attempted. The results demonstrated that its effects are not likely related to 5-HT1A or GABA(A)ergic receptors and that its anticonvulsant and antidepressant-like effect could be due to its voltage-gated sodium channel blocking properties.