title: Two new lignan glycosides from the fruits of Pyrus ussuriensis.
abstract: Two new lignan glycosides, ussuriensislignan A (1) and ussuriensislignan B (2), together with seventeen known compounds (3-19), were isolated from the fruits of Pyrus ussuriensis. Their structures were determined by various spectroscopic methods. This is the first report of the isolation of lignans (compounds 1-3) from the genus Pyrus, and compounds 3-6, 12-16 were reported from Pyrus for the first time.
authors.affiliation: a Tianjin Key Laboratory for Modern Drug Delivery and High-Efficiency, School of Pharmaceutical Science and Technology , Tianjin University , Tianjin 300072 , China.
authors.forename: Ze-Qing
authors.initials: ZQ
authors.lastname: Zhao
authors.affiliation: a Tianjin Key Laboratory for Modern Drug Delivery and High-Efficiency, School of Pharmaceutical Science and Technology , Tianjin University , Tianjin 300072 , China.|b Collaborative Innovation Center of Chemical Science and Engineering (Tianjin) , Tianjin 300072 , China.
authors.forename: Yan-Fang
authors.initials: YF
authors.lastname: Su
authors.affiliation: a Tianjin Key Laboratory for Modern Drug Delivery and High-Efficiency, School of Pharmaceutical Science and Technology , Tianjin University , Tianjin 300072 , China.
authors.forename: Fei
authors.initials: F
authors.lastname: Yang
authors.affiliation: c School of Chinese Materia Medica , Tianjin University of Traditional Chinese Medicine , Tianjin 300193 , China.
authors.forename: Xiu-Mei
authors.initials: XM
authors.lastname: Gao
authors.affiliation: c School of Chinese Materia Medica , Tianjin University of Traditional Chinese Medicine , Tianjin 300193 , China.
authors.forename: Tian-Xiang
authors.initials: TX
authors.lastname: Li
mesh_terms: D004365:Drugs, Chinese Herbal / Q000737:chemistry / Q000302:isolation & purification*; D005638:Fruit / Q000737:chemistry*; D006027:Glycosides / Q000737:chemistry / Q000302:isolation & purification*; D017705:Lignans / Q000737:chemistry / Q000302:isolation & purification*; D015394:Molecular Structure; D019906:Nuclear Magnetic Resonance, Biomolecular; D031989:Pyrus / Q000737:chemistry*
chemical_list: D004365:Drugs, Chinese Herbal; D006027:Glycosides; D017705:Lignans; C000613410:ussuriensislignan A; C000613411:ussuriensislignan B
keywords: Pyrus ussuriensis; Rosaceae; lignan glycosides