Abstract
Abstract: A series of new spirothiadiazole oxindoles were synthesized by the reaction of 4-amino-5- mercapto-3-[(1H-indol-3-yl)methyl]-1,2,4-triazole and isatin derivatives. The reaction of spiro [indole] thiadiazoles with formaldehyde and piperidine afforded the corresponding Mannich bases. The structures of newly synthesized compounds were characterized by IR, 1D-NMR, 2D-NMR, and LC/MS spectral data.
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