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The oxidation activity of di and tri-organotin complexes derived from the condensation reaction of organotin salts of chloride with para-methoxy cinnamic acid was successfully synthesized, identified, and analyzed. The synthesized complexes (1-4) were shown to be more effective than the ligand from which they were made. In addition, when compared to the other complexes, complex 2 (diphenyl tin carboxylate) is the most effective at oxidation. Several techniques were used to diagnose the produced compounds, including FTIR, 1H-NMR, and Sn119-NMR, while two approaches, DPPH and CUBRAC, were used to investigate the oxidation activity. The reactions of para-methoxy cinnamic acid and several of substituted tin chlorides gave the corresponding tin complexes with good yields. The antioxidant activity of the prepared complexes was found to be higher than that of the ligand derived from. [ABSTRACT FROM AUTHOR]

This study includes three stages in the synthesis of the hetrocyclic derivative. One stage: the formation of compounds (A1a), (A1b) and (B) using (DCC) and (HOBt) coupling reagents. The second stage: the formation of compounds (A2a, A2b) from oxidation (A1a) and (A1b) using (SiO2). Third stage: (A3a, A3b) prepred by cyclocondensation (A2a) using ethylacetoacetate and urea. Compound formation (A4a,A4b) synthesized from (A3a, A3b) with ethanol NH2NH2. Preparation of the Schiff base (A5a,A5b)Oxazepine derivatives (A6a,A6b) were synthesized from (A5a,b) with appropriate anhydrides.. Avariety of major uses for prepared compounds such as anti-cancer, anti-corrosion, anti-oxidant and antibacterial action against two forms of bacteria have been used in vitro: Escherchia coli (-G) and Staphylcoccus (+G) bactaria. Compounds classified by such spectroscopic methods H1NMR, FT-IR and C.H.N analysis. [ABSTRACT FROM AUTHOR]

Chitosan is a partly deacetylated acetyl glucosamine polymer produced by alkaline chitin's deacetylation, produced from oysters and eggs of fish, after that distinguished by FTIR and diluted acetic acid solubility (1 percent). The degree of de acetylation was established by FTIR, and compared with the chitosan derived from shrimp (de acetylation DA 75%). The three types of extracted chitosan from oyster, fish shell and shrimp were applied as antioxidants. [ABSTRACT FROM AUTHOR]