Two New Antioxidant Triterpenoids from Lonicera quinquelocularis
Dilfaraz Khan, Masood Afzal, Simon Woodward and Shafiullah Khan
Department of Chemistry Gomal University Dera Ismail Khan, KPK, Pakistan
School of Chemistry, Department of Organic Chemistry, University of Nottingham UK
Abstract: T wo new tri terpenoids namely, 3α - hydroxyferna-7, 9(11),22-trien-12-one (1) and 3α - acetoxyferna-7, 9(11)-dien-22-ol (2) along with two known compounds 3α,16α-dihydroxyferna-7,9(11)-dien-12-one (3) and 3α,16α-dihydroxyfern a -8-en-11-one (4) were isolated from Lonicera quinquelocularis . Their structures were elucidated by chemical and modern spectroscopic techniques. All the compounds showed good antioxidant activities in the DPPH radical scavenging assay.
Keywords: Lonicera quinquelocularis; Caprifoliaceae; Triterpenoids; Antioxidants; Preparative TLC.
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