Table 3.

Acetylcholinesterase (AChE) inhibitory activity of 1–3.

Compound	% inhibition at 6.6 µM	IC50 (µM)
1	10.42 ± 0.33 *	n.d.
2	14.08 ± 1.27 *	n.d.
3	39.23 ± 1.77 *	12.24 ± 0.12 **
Galantamine	39.76 ± 2.22 *	11.31 ± 0.11 **

Results are given as mean ± SEM of three independent experiments performed in triplicate; n.d. = not determined. * p < 0.05; ** p < 0.01.