Preparation of Novel Pyrazolo[4,3- e ]tetrazolo[1,5- b ][1,2,4]triazine Sulfonamides and Their Experimental and Computational Biological Studies.

Pyrazolo[4,3- e ]tetrazolo[1,5- b ][1,2,4]triazine sulfonamides constitute a novel class of heterocyclic compounds with broad biological activity, including anticancer properties. Investigated in this study, MM-compounds ( MM134 , MM136 , MM137 , and MM139 ) exhibited cytotoxic and proapoptotic activity against cancer cell lines (BxPC-3, PC-3, and HCT-116) in nanomolar concentrations without causing cytotoxicity in normal cells (L929 and WI38). In silico predictions indicate that tested compounds exhibit favorable pharmacokinetic profiles and may exert anticancer activity through the inhibition of BTK kinase, the AKT-mTOR pathway and PD1-PD-L1 interaction. Our findings point out that these sulfonamide derivatives may constitute a source of new anticancer drugs after optimization.