title: New furocarbazole alkaloids from Lonicera quinquelocularis.
abstract: Two new furocarbazole alkaloids, 3-formyl-6,7-dimethoxy-furo[1,2]carbazole (1) and methyl-6,7-dimethoxy-furo[1,2]carbazole-3-carboxylate (2), along with two known carbazole alkaloids, 3-formyl-2-hydroxy-7-methoxycarbazole (3) and methyl 2,7-dimethoxycarbazole-3-carboxylate (4) were isolated from the ethyl acetate soluble fraction of Lonicera quinquelocularis. Their structures were established on the basis of spectroscopic analysis.
authors.affiliation: a Department of Chemistry, Gomal University , Dera Ismail Khan, 29050 KPK , Pakistan.
authors.forename: Dilfaraz
authors.initials: D
authors.lastname: Khan
authors.affiliation: a Department of Chemistry, Gomal University , Dera Ismail Khan, 29050 KPK , Pakistan.|b State Key Laboratory of Organic-Inorganic Composite , Beijing University of Chemical Technology , Beijing 100029 , P.R. China.
authors.forename: Shafiullah
authors.initials: S
authors.lastname: Khan
authors.affiliation: a Department of Chemistry, Gomal University , Dera Ismail Khan, 29050 KPK , Pakistan.
authors.forename: Syed
authors.initials: S
authors.lastname: Badshah
authors.affiliation: a Department of Chemistry, Gomal University , Dera Ismail Khan, 29050 KPK , Pakistan.
authors.forename: Hazrat
authors.initials: H
authors.lastname: Ali
authors.affiliation: a Department of Chemistry, Gomal University , Dera Ismail Khan, 29050 KPK , Pakistan.
authors.forename: Hamid
authors.initials: H
authors.lastname: Ullah
authors.affiliation: c Department of Chemistry , Kohat University of Science and Technology , Kohat , 26000 KPK , Pakistan.
authors.forename: Zia
authors.initials: Z
authors.lastname: Muhammad
authors.affiliation: d School of Chemistry , University of Nottingham , NG7 2RD Nottingham , UK.
authors.forename: Simon
authors.initials: S
authors.lastname: Woodward
mesh_terms: D000470:Alkaloids / Q000032:analysis* / Q000737:chemistry; D001572:Benzofurans / Q000737:chemistry*; D002227:Carbazoles / Q000032:analysis* / Q000737:chemistry*; D002855:Chromatography, Thin Layer; D031239:Lonicera / Q000737:chemistry*; D009682:Magnetic Resonance Spectroscopy; D010936:Plant Extracts / Q000737:chemistry; D013055:Spectrophotometry, Infrared; D013056:Spectrophotometry, Ultraviolet
chemical_list: D000470:Alkaloids; D001572:Benzofurans; D002227:Carbazoles; D010936:Plant Extracts
keywords: Caprifoliaceae; Lonicera quinquelocularis; furocarbazole alkaloids