title: New tannin-related compounds from Tagetes erecta.
abstract: A mixture of two new anomers: 3,4-di-O-[syringate]-alpha-D-glucopyranose (1) and 3,4-di-O-[syringate]-beta-D-glucopyranose (2), together with syringic acid (3), were isolated from the alcohol extract of Tagetes erecta. The structures of these compounds were elucidated by various spectroscopic methods, including intensive 1D, 2D NMR and HR-ESI-MS studies. The structural assignment was further supported by HPLC-ESI-MS with compound 1 at t(R) = 3.22 min (m/z 538.9 [M-H](-)) and compound 2 at 3.25 min (m/z 538.9 [M-H](-)) in the mixture.
authors.affiliation: School of Life Science and Engineering, Southwest Jiaotong University, Chengdu 610031, China. xxbiochem@163.com
authors.forename: Xianli
authors.initials: X
authors.lastname: Zhou
authors.forename: Shuai
authors.initials: S
authors.lastname: Huang
authors.forename: Xiaoli
authors.initials: X
authors.lastname: Zhou
authors.forename: Jie
authors.initials: J
authors.lastname: Weng
authors.forename: Cuijuan
authors.initials: C
authors.lastname: Wang
mesh_terms: D035264:Flowers / Q000737:chemistry; D019906:Nuclear Magnetic Resonance, Biomolecular; D010936:Plant Extracts / Q000737:chemistry*; D031686:Tagetes / Q000737:chemistry*; D013634:Tannins / Q000032:analysis / Q000737:chemistry*
chemical_list: D010936:Plant Extracts; D013634:Tannins