“…They are known to possess a broad spectrum of biological activities such as antioxidant, analgesic, antiplatelet, antimicrobial, anticonvulsant, antidepressant, anti-inammatory, anti-tubercular, cardio protective, anti-HIV, anthelmintic, anti-diabetic, trypanocidal and anticancer activities. [1][2][3][4][5][6] Many of these compounds were patented in this respect. 7 Monohydrazide derivatives of carbonic and thiocarbonic acid, semicarbazide and thiosemicarbazide, respectively react with N-heteroaromatic carbonyl compounds giving (thio)semicarbazones -molecules well described as tridentate NNO(S) chelators and ribonucleotid reductase (RR) inhibitory agents.…”