New Bioflavonoids from Solanum nigrum L. by Anticholinesterase and Anti-tyrosinase Activities-guided Fractionation
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Dosyalar
Tarih
2017
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Acg Publications
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
Two new biflavonoids, (8-hydroxy-3'-beta-D-galactosyl-isoflavone)-2'-8'''-(4'''-hydroxy-flavone)biflavone (2); 2', 3', 5-trihydroxy-5 ''-methoxy-3 ''-O-a-glucosyl-3-4'''-O-biflavone (3) and along with apigenin (1) and quercetin-3-O-beta-glucoside (4) were isolated by activity guided fractionation from the whole plant of Solanum nigrum L.. The structures were established on the basis of UV, IR, 1D, 2D NMR and HRESI-MS spectroscopic methods. The anticholinesterase activity was performed against acetylcholinesterase and butyrylcholinesterase - the chief enzymes of Alzheimers' disease - using the Ellman method. The tyrosinase inhibitory activity was performed according to L-DOPA method. Since the ethyl acetate (IC50: 90.6+/-0.3 mu g/mL) and n-butanol (IC50: 140.6+/-1.7 mu g/mL) extracts exhibited good butyrylcholinesterase inhibitory activity, both were fractionated and the active fractions were used for isolation of the compounds. These both extracts were also exhibited better tyrosinase inhibitory activity (IC50: 76.0+/-0.6, and 156.8+/-1.9 mu g/mL, respectively). Tested enzyme inhibitory activities of S. nigrum were presented in this study for the first time.
Açıklama
Anahtar Kelimeler
Solanum nigrum, anticholinesterase activity, tyrosinase inhibitory activity, biflavonoid, Fruit Extract, Water Extract, Antioxidant, Cells, Apoptosis, Autophagy, Induction, Hepg2, Linn
Kaynak
Records of Natural Products
WoS Q Değeri
Q3
Scopus Q Değeri
Q3
Cilt
11
Sayı
2