Riluzole Series. Synthesis and in Vivo “Antiglutamate” Activity of 6-Substituted-2-benzothiazolamines and 3-Substituted-2-imino-benzothiazolines

التفاصيل البيبلوغرافية
العنوان: Riluzole Series. Synthesis and in Vivo “Antiglutamate” Activity of 6-Substituted-2-benzothiazolamines and 3-Substituted-2-imino-benzothiazolines
المؤلفون: Jimonet, P., Audiau, F., Barreau, M., Blanchard, J.-C., Boireau, A., Bour, Y., Coleno, M.-A., Doble, A., Doerflinger, G., Huu, C. Do, Donat, M.-H., Duchesne, J. M., Ganil, P., Gueremy, C., Honore, E., Just, B., Kerphirique, R., Gontier, S., Hubert, P., Laduron, P. M., Blevec, J. Le, Meunier, M., Miquet, J.-M., Nemecek, C., Pasquet, M., Piot, O., Pratt, J., Rataud, J., Reibaud, M., Stutzmann, J.-M., Mignani, S.
المصدر: Journal of Medicinal Chemistry; July 29, 1999, Vol. 42 Issue: 15 p2828-2843, 16p
مستخلص: Two series of analogues of riluzole, a blocker of excitatory amino acid mediated neurotransmission, have been synthesized: monosubstituted 2-benzothiazolamines and 3-substituted derivatives. Of all the compounds prepared in the first series, only 2-benzothiazolamines bearing alkyl, polyfluoroalkyl, or polyfluoroalkoxy substituents in the 6-position showed potent anticonvulsant activity against administration of glutamic acid in rats. The most active compounds displaying in vivo “antiglutamate” activity were the 6-OCF3 (riluzole), 6-OCF2CF3, 6-CF3, and 6-CF2CF3 substituted derivatives with ED50 values between 2.5 and 3.2 mg/kg i.p. Among the second series of variously substituted benzothiazolines, compounds as active as riluzole or up to 3 times more potent were identified in two series: benzothiazolines bearing a β-dialkylaminoethyl moiety and compounds with an alkylthioalkyl chain and their corresponding sulfoxides and sulfones. The most potent derivatives were 2-imino-3-(2-methylthio)- and 2-imino-3-(2-methylsulfinyl)-ethyl-6-trifluoromethoxybenzothiazolines (61 and 64, ED50 = 1.0 and 1.1 mg/kg i.p., respectively). In addition, intraperitoneal administration of some of the best benzothiazolines protected mice from mortality produced by hypobaric hypoxia.
قاعدة البيانات: Supplemental Index