Pyrazolo[3,4-d]pyrimidine Scaffold: Synthetic Strategies and Biological Activities

Pyrazolo[3,4-d]pyrimidine is a bicyclic heterocyclic system comprising a fused pyrimidine and pyrazole rings that structurally mimic purines, prompting biological investigations to evaluate their potential therapeutic activity. It has garnered significant attention in bioorganic and pharmaceutical chemistry. Researchers recognize their significant role in various diseases. Various chemical compounds incorporating pyrazolo[3,4-d]pyrimidine scaffold as the central core were synthesized and evaluated for their promising biological activities. It's possible to synthesize pyrazolo[3,4-d]pyrimidine nucleus from various starting materials utilizing either pyrazole or pyrimidine rings as starting synthons, along with several other miscellaneous materials. The results of their biochemical and biophysical properties together showed how important they are as adenosine nucleoside analogs in the treatment of cancer and viruses. It was reported that certain pyrazolo[3,4-d]pyrimidine compounds have anti-cancer effects through several mechanistic pathways. Furthermore, the development of drugs incorporating a pyrazolo[3,4-d]pyrimidine scaffold as a pharmacophore promotes several physiological effects in the treatment of malaria, mycobactium, inflammation, herbicidal properties, gout, and as an oral hypoglycemic drug.