Geranyl chalcone derivatives with antifungal and radical scavenging properties from the leaves of Artocarpus nobilis.
Antifungal activity guided fractionation of the n-butanol extract from the methanol extract of the leaves of Artocarpus nobilis furnished 2',4',4-trihydroxy-3'-geranylchalcone (1), 2 ',4',4-trihydroxy-3'-[6-hydroxy-3,7-dimethyl-2(E),7-octadienyl]chalcone (2), 2',4',4-trihydroxy-3'-[2-hydroxy-7-methyl-3-methylene-6-octaenyl]chalcone (3), 2',3,4,4'-tetrahydroxy-3'-geranylchalcone (4), 2',3,4,4'-tetrahydroxy-3'-[6-hydroxy-3,7-dimethyl-2(E),7-octadienyl]chalcone (5). The chalcones 3 and 5 are new natural products whereas 1 and 2 are reported first time from the family Moraceae. All these compounds showed good fungicidal activity against Cladosporium cladosporioides and high radical scavenging activity towards the 2,2'-diphenyl-1-picrylhydrazyl (DPPH) radical in TLC bio-autography method.
Jayasinghe
Lalith
L
Institute of Fundamental Studies, Hantana Road, Kandy, Sri Lanka. lalith@ifs.ac.lk
Balasooriya
B A I S
BA
Padmini
W Chintha
WC
Hara
Noriyuki
N
Fujimoto
Yoshinori
Y
D000935:Antifungal Agents / Q000737:chemistry / Q000302:isolation & purification / Q000494:pharmacology*; D031622:Artocarpus / Q000737:chemistry*; D001713:Biphenyl Compounds; D002599:Chalcone / Q000031:analogs & derivatives* / Q000302:isolation & purification / Q000494:pharmacology*; D002855:Chromatography, Thin Layer / Q000379:methods; D002963:Cladosporium / Q000187:drug effects; D016166:Free Radical Scavengers / Q000737:chemistry / Q000302:isolation & purification / Q000494:pharmacology*; D005609:Free Radicals / Q000037:antagonists & inhibitors; D015394:Molecular Structure; D019906:Nuclear Magnetic Resonance, Biomolecular; D010851:Picrates / Q000037:antagonists & inhibitors; D010936:Plant Extracts / Q000737:chemistry / Q000494:pharmacology; D018515:Plant Leaves / Q000737:chemistry
D000935:Antifungal Agents; D001713:Biphenyl Compounds; D016166:Free Radical Scavengers; D005609:Free Radicals; D010851:Picrates; D010936:Plant Extracts; D002599:Chalcone; C004931:1,1-diphenyl-2-picrylhydrazyl