title: Isolation and characterisation of three new anthraquinone secondary metabolites from Symplocos racemosa.
abstract: Three new anthraquinone secondary metabolites were isolated from Symplocos racemosa, a small tree of family symplocaceae. The structures of compounds (1-3) were elucidated to be 1,4-dihydroxy-6-(ethoxymethyl)-8-propylanthracene-9,10-dione (1), 1,4-dihydroxy-6-(hydroxymethyl)-8-butylanthracene-9,10-dione (2) and 1,4-dihydroxy-6-(hydroxymethyl)-8-propyl anthracene-9,10-dione (3) using their spectral data, i.e. through IR, UV, (1)H NMR, (13)C NMR and two-dimensional (2D) NMR techniques including heteronuclear multiple quantum coherence, heteronuclear multiple bond correlation and correlation spectroscopy.
authors.affiliation: a Department of Chemistry , COMSATS Institute of Information Technology , Abbottabad 22060 , Pakistan.
authors.forename: Umar
authors.initials: U
authors.lastname: Farooq
authors.affiliation: a Department of Chemistry , COMSATS Institute of Information Technology , Abbottabad 22060 , Pakistan.
authors.forename: Sadia
authors.initials: S
authors.lastname: Naz
authors.affiliation: a Department of Chemistry , COMSATS Institute of Information Technology , Abbottabad 22060 , Pakistan.
authors.forename: Ajmal
authors.initials: A
authors.lastname: Khan
authors.affiliation: a Department of Chemistry , COMSATS Institute of Information Technology , Abbottabad 22060 , Pakistan.
authors.forename: Sara
authors.initials: S
authors.lastname: Khan
authors.affiliation: a Department of Chemistry , COMSATS Institute of Information Technology , Abbottabad 22060 , Pakistan.
authors.forename: Afsar
authors.initials: A
authors.lastname: Khan
authors.affiliation: b Department of Chemistry , University of Malakand , Chakdara, Dir (L) , Pakistan.
authors.forename: Mumtaz
authors.initials: M
authors.lastname: Ali
authors.affiliation: c H. E. J. Research Institute of Chemistry, International Center for Chemical and Biological Sciences, University of Karachi , Karachi 75270 , Pakistan.
authors.forename: Saleha Suleman
authors.initials: SS
authors.lastname: Khan
mesh_terms: D000873:Anthracenes / Q000737:chemistry* / Q000302:isolation & purification; D000880:Anthraquinones / Q000737:chemistry* / Q000302:isolation & purification; D009682:Magnetic Resonance Spectroscopy / Q000379:methods; D019684:Magnoliopsida / Q000737:chemistry* / Q000378:metabolism; D015394:Molecular Structure; D064210:Secondary Metabolism
chemical_list: C000609507:1,4-dihydroxy-6-(ethoxymethyl)-8-propylanthracene-9,10-dione; C000609505:1,4-dihydroxy-6-(hydroxymethyl)-8-butylanthracene-9,10-dione; C000609506:1,4-dihydroxy-6-(hydroxymethyl)-8-propyl anthracene-9,10-dione; D000873:Anthracenes; D000880:Anthraquinones
keywords: Symplocaceae; Symplocos racemosa; anthraquinone