synthesis

The investigation of fullerenes and especially of carbon nanotubes (CNTs) has opened a totally new window for the development of polymer matrix composites with novel properties and applications. CNTs, which have a number of unexpected properties, both mechanical and electrical, seem to have huge potential as a filler, i.e. as a reinforcement in nanocomposites. With the discovery of carbon nanotubes, the research efforts have been initially concentrated on the better understanding of their processing conditions, modification, and properties.

A new series of methyl 4,6-O-(4-methoxybenzylidene)--D-glucopyranoside derivatives was synthesized using the direct acylation method. Methyl--D-glucopyranoside was selectively converted to methyl 4,6-O-(4-methoxybenzylidene)--D-glucopyranoside by the reaction with 4-methoxybenzaldehyde dimethylacetal in a reasonable yield. Using a wide variety of acylating agents, a series of 2,3-di-O-acyl derivatives of this product was also prepared in order to gather additional information for structure elucidation.

Porous spherical materials can be obtained by suspensions polymerization using a solvent pair. In this work porous resins based on methyl methacrylate and divinylbenzene were synthesized and characterized in terms of apparent density, specific area, pore volume, morphology, and swelling percentage. The results show that the diluents system (toluene/heptane or methylethylketone/cyclohexane) affect significantly the polymer properties. Furthermore, differences in the solubility parameters of the monomers and diluents affect the morphological structure of beads.

The synthesis and antitumor activity screening of 1,2,4-triazino[5,6-b]indoles based conjugates were performed. Reaction between 3-mercapto-1,2,4-triazino[5,6-b]indoles and several N-arylchloroacetamides yielded 3S-substituted 1,2,4-triazino[5,6-b]indoles. Based on 3-hydrazine-1,2,4-triazino[5,6-b]indoles the new 4-thiazolidinones have been synthesized. Seven synthesized compounds were tested for their anticancer activity in NCI60 cell lines.

The interaction of pyridine-4(-3,-2)aldoxime has been studied whit 3-bromo-N,N,N-trialkyl-2-oxo(-hydroxyimino)-1-propanaminium bromide. The structure of all synthesized compounds was determined by elemental analysis as well as by physical and chemical methods. All synthesized compounds were tested for reactivation of phosphorylated acetylcholinesterase.