engleski

Novel bis-styrylbenzothiazolium salts as potentially biologically active substances

A large number of benzothiazole derivatives are of considerable biological and chemical interest.[1] Many 2-substituted benzothiazoles when quarternized to benzothiazolium salts are especially active as antimicrobial, antihelminitic and antineoplastic agents.[2] Recently, we reported the discovery of styrylbenzothiazoles with biological activity.[3] We continued our work in order to improve biological activity of benzothiazole compounds and further synthesis was carried out on series of novel bis-styrylbenzothiazolium salts 4-12. All bis-benzothiazolium salts 1-12 were prepared in multistep synthesis from 2-methylbenzothiazole[4]. All compounds were characterized by means of IR, 1H- and 13C-NMR spectroscopy and elemental analysis. [1] T. D. Bradshaw, F. G. Stevens, A. D. Westwell, Current Med. Chem., 8 (2001) 203-208. [2] P. Magdolen, P. Zahradnim, P. Foltinova, Arzneim.-Forsch./Drug Res., 50 (2000) 1023-1027. [3] I. Ćaleta, M. Grdiša, D. Mrvoš-Sermek, M. Cetina, V. Tralić-Kulenović, K. Pavelić, G. Karminski-Zamola, Il Farmaco, 59 (2004) 297– 305. [4] S. P. Gromov, O. A. Fedorova, E. N. Ushakov, A. V. Buevich, I. I. Baskin, Y. V. Pershina, B. Eliasson, U. Edlund, M. V. Alfimov, J. Chem. Soc./Perkin Trans. 2, (1999), 1323-1329.

bis-benzotiazolijeve soli; stirilbenzotiazoli

nije evidentirano