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7052474 
Journal Article 
Pteryxin - A promising butyrylcholinesterase-inhibiting coumarin derivative from Mutellina purpurea 
Orhan, IE; Senol, FS; Shekfeh, S; Skalicka-Wozniak, K; Banoglu, E; , 
2017 
PERGAMON-ELSEVIER SCIENCE LTD 
OXFORD 
970-974 
28286309 
WOS:000415911500018 
Pteryxin is a dihydropyranocoumarin derivative found in Apiaceae family. In this study, pteryxin, which was previously isolated from the fruits of Mutellina purpurea, was investigated for its inhibitory potential against acetylcholinesterase (AChE) and butyrylcholinesterase (BChE), which are the key enzymes in the pathology of Alzheimer's disease (AD). The compound was tested in vitro using ELISA microplate reader at 100 and found to cause 9.30 +/- 1.86% and 91.62 +/- 1.53% inhibition against AChE and BChE, respectively. According to our results, pteryxin (IC50 = 12.96 +/- 0.70 mu g/ml) was found to be a more active inhibitor of BChE than galanthamine (IC50 = 22.16 +/- 0.91 mu g/ml; 81.93 +/- 2.52% of inhibition at 100 mu g/ml). Further study on pteryxin using molecular docking experiments revealed different possible binding modes with both polar and hydrophobic interactions inside the binding pocket of BChE. Top docking solution points out to the formation of two hydrogen bonds with the catalytic residues 5198 and H438 of BChE as well as a strong pi-pi stacking with W231. Therefore, pteryxin as a natural coumarin seems to be a strong BChE inhibitor, which could be considered as a lead compound to develop novel BChE inhibitors for AD treatment (C) 2017 Elsevier Ltd. All rights reserved. 
9th International Symposium on Natural Products Chemistry and Applications 
Chillan, CHILE