title: A new amide from Asarum forbesii Maxim.
abstract: A highly unsaturated new amide, (2E,4Z,8Z,10Z)-N-isobutyl-2,4,8,10-dodecatetraenamide (1), was isolated in very small quantities from the whole plant of Asarum forbesii Maxim. together with four known compounds, (2E,4E,8Z,10E)-N-isobutyl-2,4,8,10-dodecatetraenamide (2), (-)-sesamin (3), (-)-asarinin (4) and (E)-asarone (5). The Z/E isomers, 1 and 2, were separated successfully by developed silver-ion medium-pressure liquid chromatography (SIMPLC). Compound 2 and the two diastereoisomers, 3 and 4, were isolated from this plant for the first time. The characterization of these compounds was achieved by various spectroscopic methods.
authors.affiliation: Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, China.
authors.forename: Feng
authors.initials: F
authors.lastname: Zhang
authors.forename: Chang-Hu
authors.initials: CH
authors.lastname: Chu
authors.forename: Qing
authors.initials: Q
authors.lastname: Xu
authors.forename: Shao-Ping
authors.initials: SP
authors.lastname: Fu
authors.forename: Jie-Han
authors.initials: JH
authors.lastname: Hu
authors.forename: Hong-Bin
authors.initials: HB
authors.lastname: Xiao
authors.forename: Xin-Miao
authors.initials: XM
authors.lastname: Liang
mesh_terms: D000577:Amides / Q000737:chemistry / Q000302:isolation & purification*; D030023:Asarum / Q000737:chemistry*; D009682:Magnetic Resonance Spectroscopy
chemical_list: D000577:Amides