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A series of macrocyclic tricyclooctacosa- and -triacontahexaene Schiff base derivatives were synthesized by reacting pyridine-3,5-dicabonyl dichloride with dibasic amino acids esters, followed by hydrazinolysis and treatment of the resulting tricyclic bis-hydrazides with aromatic aldehydes. The newly synthesized compounds were characterized by IR, NMR, and MS spectra and screened for antimicrobial...
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