title: Secoiridoids and xanthones from Tylophora secamonoides Tsiang.
abstract: A new secoiridoid, secamonoide A (1), and a new xanthone glycoside, secamonoide B (2), together with nine known compounds, were isolated from the aerial parts of Tylophora secamonoides Tsiang. Their structures were elucidated on the basis of spectroscopic methods. An antimicrobial bioassay showed that secamonoides A and B exhibited weak activities (MIC values greater than 100 mg/ml) against some hospital bacteria in vitro.
authors.affiliation: Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, China.
authors.forename: Sheng
authors.initials: S
authors.lastname: Yao
authors.forename: Chun-Ping
authors.initials: CP
authors.lastname: Tang
authors.forename: Yang
authors.initials: Y
authors.lastname: Ye
mesh_terms: D000890:Anti-Infective Agents / Q000737:chemistry / Q000302:isolation & purification*; D004365:Drugs, Chinese Herbal / Q000737:chemistry; D039823:Iridoids / Q000737:chemistry / Q000302:isolation & purification*; D015394:Molecular Structure; D031110:Tylophora / Q000737:chemistry*; D044004:Xanthones / Q000737:chemistry / Q000302:isolation & purification*
chemical_list: D000890:Anti-Infective Agents; D004365:Drugs, Chinese Herbal; D039823:Iridoids; D044004:Xanthones