Cholinesterase Inhibiting Terpenoid from Albizia kalkora

Albizia kalkora is potent source of phytocompounds. In recent phytochemical investigation one new triterpenoid Albizinoic acid A was isolated from the chloroform soluble fraction of medicinal plant Albizia kalkora. The structure was elucidated by physical, chemical, and spectroscopic analysis (FT-IR, 1D& 2D-NMR, Mass spectrometry). This bioactive compound exhibited inhibitory potential against Alzheimer's disease (AD) causing enzymes acetylcholinesterase (AChE) and butyrylcholinesterase (BChE). IC50 of Albizinoic acid A against cholinesterase were found 25.3 +/- 0.02, AChE and 19.0 +/- 0.03, BChE while galanthamine as a positive control (0.5 +/- 0.05, AChE and 8.5 +/- 0.01, BChE). This enzymes assay indicated that Albizinoic acid A has great potential of pharmacological characteristics.