Межрегиональная Общественная организация "Российское Респираторное Общество" Академический Медицинский Центр, г. Санкт Петербург 14-17 ноября 2006 года в Санкт Петербурге состоится 16 й Национальный Конгресс по болезням органов дыхания. Прием тезисов и ранняя регистрация до 1 июля 2006 года. Подробная информация об условиях участия в Конгрессе: www.pulmolology.ru

The article substantiates and experimentally confirms the possibility of a non-starch polysaccharide – sodium alginate to form complex compounds with iron (III) and copper (II) ions. Alginates are used in medical practice as an enterosorbent for severe poisoning with metal ions due to their ability to form complexes with heavy metals, insoluble in water.

The article considers not only the possibility of non-starch polysaccharides to bind heavy metal ions, but the factors affecting this ability are determined. The ability of some non-starch polysaccharides to form complexes with heavy metal ions significantly depends on the structure, structure and external chemical factors. Considered polysaccharides are: pectin, chitosan and sodium alginate. Considered factors: temperature and pH.

This article is devoted to a selection of the most effective preparative method for the synthesis of bis(5-amino-1,3,4-thiadiazole-2-yl)alkanes. These compounds are binuclear diamines consisting of symmetrical 1,3,4-thiadiazole fragments connected by alkyl spacers of various lengths. The structures of the obtained compounds were determined by IR spectroscopy, mass-spectrometry and elemental analysis. The possibility of using these molecules as precursors for the synthesis of macroheterocyclic compounds with expended coordination cavity consisting of six small cycles was demonstrated. Optimal synthesis conditions of bis(5-amino-1,3,4-thiadiazole-2-yl)ethane and bis(5-amino-1,3,4-thiadiazole-2-yl)butane were found by variation of reaction time and temperature. Virtual screening of the obtained compounds was carried out in order to predict antibacterial and biological activities as well as toxic properties of the targeted products. On the basis of the known literature data on polynuclear diamines, the exhibition of the liquid crystal properties of the synthesized molecules is supposed.

The article discusses the structure, structure and properties of cellulose obtained from various natural sources of plant origin. The physical and mechanical properties of celluloses (content of α–cellulose, determination of the mass fraction of pentosans; determination of the copper number; viscosity characteristics; determination of the degree of purity, moisture content and ash content and determination of the average molecular weight, degree of polymerization and content of aldehyde and carboxyl groups), interaction with nitrogen acid as well as the ability of various cellulose samples to complex formation with copper ions.