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A series of novel carbazole based α-aminophosphonate derivatives were synthesized under solvent-free condition, characterized and evaluated for their cholinesterase inhibition, enzyme kinetic inhibition,  in-vitro  cell viability using N2a cells, neuroprotective studies against H 2 O 2 -induced stress using N2a cells and antioxidant studies using DPPH radical activity. Test compounds displayed better AChE activity (0.475 to 7.781 µM) than BuChE (3.306 to 21.32 µM). Compound  4j  was most potent derivative against AChE as well as BuChE with IC 50 =0.475 ± 0.12 µM and IC 50 =3.306 ± 0.21 µM respectively. Kinetic inhibition studies indicate that compound  4j  exhibits mixed type inhibition against both enzymes which was supported by molecular docking studies. Cell viability studies showed that compounds did not induce any cytotoxic effect against N2a cells using MTT assay. Also, compound  4j ,  4 s  and  4r  were subjected to H 2 O 2 -induced stress using N2a cells and were found to be protective in nature. ADME predictions were carried out to understand the pharmacokinetics behaviour. Communicated by Ramaswamy H. Sarma

Synthesis of carbazole based α-aminophosphonate derivatives: design, molecular docking and in vitro cholinesterase activity