title: Two new xanthones from the pericarp of Garcinia mangostana.
abstract: Two new xanthones, designated garcimangosxanthone F (1) and garcimangosxanthone G (2), were isolated from the EtOAc-soluble fraction of ethanolic extract from the pericarp of Garcinia mangostana. Their structures were established as 1,6,7-trihydroxy-5-(3-methylbut-2-enyl)-8-(3-hydroxy-3-methylbutyl)-6',6'-dimethylpyrano[2',3':3,2]xanthone and 1,6,7-trihydroxy-5-(3-methylbut-2-enyl)-8-(3-hydroxy-3-methylbutyl)-6',6'-dimethyl-4',5'-dihydropyrano[2',3':3,2]xanthone, respectively, on the basis of their 1D, 2D NMR and MS data interpretation.
authors.affiliation: a Key Laboratory of Plant Resources Conservation and Sustainable Utilization, South China Botanical Garden, Chinese Academy of Sciences , Guangzhou , P.R. China.
authors.forename: Xiaojun
authors.initials: X
authors.lastname: Zhou
authors.forename: Luan
authors.initials: L
authors.lastname: He
authors.forename: Xinxing
authors.initials: X
authors.lastname: Wu
authors.forename: Yanxia
authors.initials: Y
authors.lastname: Zhong
authors.forename: Juan
authors.initials: J
authors.lastname: Zhang
authors.forename: Yuanxing
authors.initials: Y
authors.lastname: Wang
authors.forename: Bin
authors.initials: B
authors.lastname: Wang
authors.forename: Zhifang
authors.initials: Z
authors.lastname: Xu
authors.forename: Shengxiang
authors.initials: S
authors.lastname: Qiu
mesh_terms: D005638:Fruit / Q000737:chemistry*; D029762:Garcinia mangostana / Q000737:chemistry*; D015394:Molecular Structure; D019906:Nuclear Magnetic Resonance, Biomolecular; D044004:Xanthones / Q000737:chemistry / Q000302:isolation & purification*
chemical_list: D044004:Xanthones; C000595998:garcimangosxanthone F; C000595999:garcimangosxanthone G
keywords: Garcinia mangostana; garcimangosxanthone F; garcimangosxanthone G; xanthone