Synthèse et étude pharmacologique de quelques adamantylcyclopentanamines
摘要:
In this paper the synthesis of adamantylcyclopentanamines 5, 7 and 8 is described. The experimental data obtained with these derivatives on mice (behaviour, effect on the reserpinic catalepsy or hypothermy, study of the convulsions obtained with high doses) argue in favour of the existence of a glutamatergic component on the action mechanism of these adamantanamines.
Compounds useful for treating and preventing viral infections including influenza are disclosed. Methods of treating or preventing viral infections, including influenza A infections are disclosed. Specifically, aminoadamantane derivatives that are structurally analogous to amantadine, including spirocyclic compounds, are provided for the treatment of amantadine-insensitive influenza infection in a subject.
While aminoadamantanes are well-established inhibitors of the influenza A M2 proton channel, the mechanisms by which they are rendered ineffective against M2(s31N) are unclear. Solid state NMR, isothermal titration calorimetry, electrophysiology, antiviral assays, and molecular dynamics simulations suggest stronger binding interactions for aminoadamantanes to M2(WT). compared to negligible or weak binding to M2s31N. This is due to reshaping of the M2 pore when N31 is present, which, in contrast to wild-type (WT), leads (A) to the loss of the V27 pocket for the adamantyl cage and to a predominant orientation of the ligand's ammonium group toward the N-terminus and (B) to the lack of a helical kink upon ligand binding. The kink, which reduces the tilt of the C-terminal helical domain relative to the bilayer normal, includes the W41 primary gate for proton conductance and may prevent the gate from opening, representing an alternative view for how these drugs prevent proton conductance.
Compounds useful for treating and preventing viral infections including influenza are disclosed. Methods of treating or preventing viral infections, including influenza A infections are disclosed.
Approaches to primary tert-alkyl amines as building blocks
Primary tert-alkyl amines include analogues of amantadine, a fragment commonly linked to pharmacophoric groups to enhance biological activity. The preparation of primary tert-alkyl amines is considered to be a difficult problem. Four synthetic procedures, some of which have been previously reported for the synthesis of amines with primary (RCH2NH2) or secondary (RR'CHNH2) alkyl and/or aryl groups,