New 5-methylisatin including thiocarbohydrazones: preparation, structure elucidation and antimicrobial activity

Novel asymmetric biscarbothioamides as Alzheimer's disease associated cholinesterase inhibitors: synthesis, biological activity, and molecular docking studies

“…The frequency values of these molecules were in agreement with those reported for similar compounds. 40–44…”

“…The frequency values of these molecules were in agreement with those reported for similar compounds. [40][41][42][43][44] In the 1 H-NMR spectra, all the compounds showed a broad singlet (bs) in the range of 10.76-8.09 ppm for the characteristic aromatic NH protons (Ar-NH-) and bis(carbothioamide) NH protons (-CQS-NH-NH-CQS-). In the 13 C-NMR spectrum for compounds 3a-f, the characteristic signal of the -CQS functional group appeared in the range of 181.84-181.27 ppm, while for some derivatives (3g-l) these values also appeared in the range of 162-152 ppm.…”