الفهرس 
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Abstract
The research program in this thesis is directed towards the synthesis of some bio-dynamic heterocyclic systems binary attached with pyridine derivatives as imidazole, thiazole, thiazolidinon, thiophene chromenes, arylidene, triazine and hydrazine to secure new products and with expected biological activities. The used methods for these syntheses are simple and the reagents are available in our laboratory.