Novel 21-aminosteroids that inhibit iron-dependent lipid peroxidation and protect against central nervous system trauma
摘要:
A novel class of 21-aminosteroids has been developed. Compounds within this series are potent inhibitors of iron-dependent lipid peroxidation in rat brain homogenates with IC50's as low as 3 microM. Furthermore, selected members enhance early neurological recovery and survival in a mouse head injury model. Significant improvement in the 1 h post-head-injury neurological status (grip test score) by as much as 168.6% of the control has been observed. The most efficacious compound in this assay (30) showed an increase in the 1-week survival of 78.6% as compared to 27.3% for the vehicle-treated mice in the head-injury model. Based on its biological profile, 21-[4-(2,6-di-1-pyrrolidinyl-4-pyrimidinyl)-1-piperazinyl]-16 alpha- methylpregna-1,4,9(11)-triene-3,20-dione monomethanesulfonate (30) was selected for further evaluation and is currently entering phase I clinical trials for the treatment of head and spinal trauma.
(EN) Disclosed are $g(D)9(11)-steroids (VI) and amino substituted steroids of formula (XI), which contain an amino group attached to the terminal carbon atom of the C17-side chain, more particularly amino steroids (Ia and Ib), aromatic steroids (II), $g(D)16-steroids (IIIa and IIIb), reduced A-ring steroids (IV), $g(D)17(20)-steroids (Va and Vb) and $g(D)9(11)-steroids (VI) which are useful as pharmaceutical agents for treating a number of conditions.(FR) Stéroïdes $g(D)9(11) (VI) et stéroïdes à substitution amino de formule (XI), contenant un groupe amino fixé à la terminaison d'atome de carbone de la chaîne côté C17, plus particulièrement amino-stéroïdes (Ia et Ib), stéroïdes aromatiques (II), stéroïdes $g(D)16 IIIa et IIIb), stéroïdes à composés cycliques A réduits (IV), stéroïdes $g(D)17(20) (Va et Vb) et stéroïdes $g(D)9(11) (VI) utiles en tant qu'agents pharmaceutiques pour traiter un certain nombre d'états.