Dai_2020_Nat.Prod.Res__1

Goodyschle A (1), a new butenolide, was isolated from the whole grass of Goodyera schlechtendaliana, an orchidaceous edible medicinal plant. The structure of the new compound was elucidated by 1 D and 2 D NMR experiments in addition to HRESIMS analyses. Compound 1 was evaluated for its bioactivities including cytotoxic activity against human gastric cancer (SGC-7901) and human hepatocellular carcinoma (HepG2) cell lines, inhibitory activity on acetylcholinesterase (AChE) and butyrylcholinesterase (BChE), and DPPH radical scavenging activity. As a result, compound 1 showed potent BChE inhibitory activity (IC50 value = 6.88 +/- 1.63 muM), moderate DPPH radical scavenging activity (IC50 value = 16.25 +/- 0.21 muM), and slight AChE inhibitory and cytotoxic activities. These findings suggest that compound 1 is worthy for further investigations in terms of its selective BChE inhibitory activity.