Synthesis and characterization of new optically active and heat resistant poly(amide-imide)s derived from N,N -(bicyclo[2,2,2]oct-7-ene-2,3,5,6-tetracarboxylic)- bis-L-leucine and aromatic diamines

Authors : Negar MOHAMMADHOSSEINI, Ali ASADIPOUR, Bahram LETAFAT

Pages : 459-470

Doi:10.3906/sag-1203-61

View : 9 | Download : 3

Publication Date : 0000-00-00

Article Type : Research Paper

Abstract :Starting from insert ignore into journalissuearticles values(5-nitrofuran-2-yl);methylene diacetate, a new series of 2-[insert ignore into journalissuearticles values(substituted benzyl);thio]-5-insert ignore into journalissuearticles values(5-nitro-2-furyl);-1,3,4-thiadiazoles insert ignore into journalissuearticles values(6a-n); were synthesized and the structures of the compounds were determined using spectroscopic methods including mass spectrometry, 1H-nuclear magnetic resonance, infrared spectroscopy, and elemental analysis. The in vitro anti-Helicobacter pylori activity of the synthesized compounds was evaluated by the disk diffusion method against the clinical isolates of Helicobacter pylori. The results indicated that most of the synthesized compounds exhibited significant inhibitory activity against H. pylori with respect to standard drug metronidazole. Compound 6l, containing the 2-chloro-6-fluorobenzylthio moiety, was the most potent compound tested.
Keywords : 1, 3, 4 Thiadiazole, nitrofuran, anti Helicobacter pylori activity