Table 2.

Inhibitory activity (%) of part compounds against AChE and BChE.

Compds	R	Inhibition Rate a (%)
		AChE	BChE
2b	o-F	N.A. b	49.0
2f	m-Cl	N.A.	3.4
2j	p-Br	N.A.	34.5
2l	m-CF3	N.A.	49.1
2q	m-CH3	N.A.	8.7
2s	o-OCH3	N.A.	39.6
2t	m-OCH3	N.A.	55.0
2u	p-OCH3	N.A.	40.7
2w	3,4-(OCH3)2	N.A.	9.4
2z	3,4-Cl2	N.A.	12.1
2ab	2,6-F2	N.A.	24.9
2ac	p-CN	N.A.	17.7
donepezil	-	62.7	- c
tacolin	-	-	98.2

^a Compounds concentration 100 µM; ^b N.A.—not active; ^c—not test.