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Table 2 In vitro anticholinesterase activities of compounds 1–4

From: Acetyl and butyryl cholinesterase inhibitory sesquiterpene lactones from Amberboa ramosa

  IC 50 (μM) ± SEMa  
S. No Compounds AChE BChE
1 Amberbin C (1) 1.1 ± 0.08 17.9 ± 0.05
2 Amberin (2) 17.5 ± 0.01 2.7 ± 0.02
3 Amberbin A (3) 8.6 ± 0.15 4.8 ± 0.15
4 Amberbin B (4) 0.91 ± 0.015 2.5 ± 0.15
5 Galanthamineb 0.5 ± 0.01 8.2 ± 0.02
6 Eserineb 0.04 ± 0.0001 0.82 ± 0.001
  1. a Standard error of the mean of five assays; b positive control used in the assays.