Figure 1

The structures of (A) acteoside, (B) isoacteoside, (C) caffeic acid, and (D) 3′,4′-dihydroxyphenylethanol used in the experiments.
The structures of (A) acteoside, (B) isoacteoside, (C) caffeic acid, and (D) 3′,4′-dihydroxyphenylethanol used in the experiments.