Table 2.

Results (IC₅₀, μM) of in vitro acetylcholinesterase assay of compounds 4a-4l

Compound	4a	4b	4c	4d	4e	4f	4g	4h	4i	4j	4k	4l	Donepezil
R	2-Cl	3-Cl	4-Cl	2-F	3-F	4-F	3-OCH3	4-OCH3	2-NO2	3-NO2	4-NO2	H	-
IC50(μM)	0.91 ± 0.045	85 ± 12	26 ± 5	23 ± 7	74 ± 11	42 ± 8	5.5 ± 0.7	72 ± 9	36 ± 5	59 ± 6	40 ± 4	9 ± 2	0.14 ± 0.03