Synthesis of Five Membered Ring Compounds with possible Biological activity Applying the stable condensation

five membered Ring Compounds-Stobbe Condensation A general survey of chalcones, their nature and reactivity sp- especially in the stobbe condensation and Michael addition is pre- sented . A discussion of the experimental results is given and plausible interpretations of the experimental findings are adv- anced . moreover , the majacrityof the target compounds were bi- ologically tested and the results discussed .A general survey of chalcones , their nature and reactivity specially in the Stobbe condensation and Michael addition is presented . A discussion of the experimental results is given and plausible interpretations of the experimental findings are advanced . Moreover , the majority of the target compounds were biologically tested and the results discussed .In addition, the study involved the synthesis of some new compounds .Moreover, certain new compound were subjected to pharmacological screening and the results obtained are summarized .