Modification of Creatinine to Form New Oxazepane Ring and Study Their Antioxidant Activity
In this research new creatinine Schiff bases (1a, 1b, and 1c) were synthesized from the reaction of aromatic aldehydes (4-nitrobenzaldehyde,4-amino benzaldehyde, and cinnamaldehyde) with creatinine, in few drops of glacial CH3COOH as a catalyst in C2H5OH. Then, seven-member rings were prepared (oxazepine) (2a-4c) on creatinine form treatment of imines with (phthalic, maleic, and succinic anhydrides. Synthesized compounds were identified by IR, melting point, and 1H-NMR of some of them. Some of the prepared compounds were studded with antioxidant activity.
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