Table 2 Acetylcholinesterase inhibitory activity of extract, fractions (F1–F4) and five compounds isolated from the leaves and twigs of Artemisia annua

71.83 ± 7.32^a

87.43 ± 4.04^a

58.33 ± 6.00^b

379.82 ± 20.16^b

88.67 ± 5.28^c

36.75 ± 3.59^c

69.00 ± 9.26b

104.08 ± 8.60^d

91.17 ± 7.59^c,d

28.82 ± 5.15^e

71.67 ± 7.90^a,b

29.34 ± 4.92^e

56.34 ± 4.92^b

70 ± 5.97^f

80.00 ± 9.67^b,c

27.14 ± 5.16^e

58.22 ± 2.73^b

67.07 ± 7.32 ^g

68.00 ± 5.51^b

37.73 ± 2.45^c,h

88.22 ± 2.73^c

8.22 ± 2.73ⁱ