title: Hopeahainol A: an acetylcholinesterase inhibitor from Hopea hainanensis.
abstract: A phytochemical study of Hopea hainanensis has led to the isolation of three new polyphenols and one known compound. The most important of these compounds are hopeahainols A (2) and B (3), which contain an unprecedented carbon skeleton. The structures were elucidated by analysis of the spectroscopic data including single-crystal X-ray spectroscopy and computational methods. Hopeahainol A was an acetylcholinesterase inhibitor with an IC50 value of 4.33 microM, which is comparable to that of huperzine A, a presently prescribed drug for the treatment of Alzheimer, while other similar structures were inactive. This observation was complemented by a 3D interaction model of the inhibitor with active sites.
authors.affiliation: Institute of Functional Biomolecules, State Key Laboratory of Pharmaceutical Biotechnology, School of Medicine, Nanjing University, Nanjing, 210093, PR China.
authors.forename: Hui Ming
authors.initials: HM
authors.lastname: Ge
authors.forename: Chun Hua
authors.initials: CH
authors.lastname: Zhu
authors.forename: Da Hua
authors.initials: da H
authors.lastname: Shi
authors.forename: Li Dong
authors.initials: LD
authors.lastname: Zhang
authors.forename: Dai Qian
authors.initials: DQ
authors.lastname: Xie
authors.forename: Jie
authors.initials: J
authors.lastname: Yang
authors.forename: Seik Weng
authors.initials: SW
authors.lastname: Ng
authors.forename: Ren Xiang
authors.initials: RX
authors.lastname: Tan
mesh_terms: D000110:Acetylcholinesterase / Q000378:metabolism*; D002800:Cholinesterase Inhibitors / Q000737:chemistry* / Q000378:metabolism / Q000494:pharmacology*; D018360:Crystallography, X-Ray; D053958:Dipterocarpaceae / Q000737:chemistry*; D006576:Heterocyclic Compounds, 4 or More Rings / Q000737:chemistry* / Q000378:metabolism / Q000494:pharmacology*; D009682:Magnetic Resonance Spectroscopy; D008958:Models, Molecular; D015394:Molecular Structure
chemical_list: D002800:Cholinesterase Inhibitors; D006576:Heterocyclic Compounds, 4 or More Rings; C526863:hopeahainol A; D000110:Acetylcholinesterase