title: Two new cyclic bis(bibenzyl)s, isoriccardinquinone A and B from the liverwort Marchantia paleacea.
abstract: From the 95% ethanol extract of the Hong Kong liverwort, Marchantiapaleacea, guided by bioactivity directed isolation, two novel isoriccardinquinones A and B were obtained together with previously known marchantin C, isoriccardin C and phenanthrene derivative, 2-hydroxy-3,7-dimethoxyphenanthrene. The structures of the new compounds were established by high field spectroscopic methods, including 2D NMR techniques.
authors.affiliation: Department of Biology, Hong Kong Baptist University, Kowloon Tong.
authors.forename: May-Ling
authors.initials: ML
authors.lastname: So
authors.forename: Wing-Hong
authors.initials: WH
authors.lastname: Chan
authors.forename: Ping-Fang
authors.initials: PF
authors.lastname: Xia
authors.forename: Yuxin
authors.initials: Y
authors.lastname: Cui
mesh_terms: D001632:Bibenzyls; D019068:Bryopsida / Q000737:chemistry*; D002396:Catechols / Q000737:chemistry; D002855:Chromatography, Thin Layer; D004988:Ethers, Cyclic; D006723:Hong Kong; D015394:Molecular Structure; D019906:Nuclear Magnetic Resonance, Biomolecular; D010616:Phenanthrenes / Q000737:chemistry; D010647:Phenyl Ethers / Q000737:chemistry; D010946:Plants, Medicinal / Q000737:chemistry*; D011809:Quinones / Q000737:chemistry / Q000302:isolation & purification*; D021241:Spectrometry, Mass, Electrospray Ionization; D013055:Spectrophotometry, Infrared
chemical_list: C459127:2-hydroxy-3,7-dimethoxyphenanthrene; D001632:Bibenzyls; D002396:Catechols; D004988:Ethers, Cyclic; D010616:Phenanthrenes; D010647:Phenyl Ethers; D011809:Quinones; C459128:isoriccardin C; C459124:isoriccardinquinone A; C459125:isoriccardinquinone B; C459129:marchantin C