title: Andrographidine G, a new flavone glucoside from Andrographis paniculata.
abstract: A new flavone glucoside, andrographidine G (1), was isolated from Andrographis paniculata together with 13 known compounds, including flavonoids, diterpenoids, and iridoids. The structure of 1 was established by spectroscopic and spectrometric techniques, including HR-ESI-TOF-MS, 1D and 2D NMR, and chemical methods. The known compounds were identified as andrographidine A (2), (2R)-5-hydroxy-7,8-dimethoxyflavanone-5-O-beta-D-glucopyranoside (3), acanthoside B (4), neoandrographiside (5), andropanoside (6), andrographiside (7), andrographolide (8), 14-deoxy-11,12-didehydroandrographiside (9), 14-deoxy-11,12-didehydroandrographolide (10), procumbide (11), procumboside (12), 6-epi-8-O-acetylharpagide (13), and curvifloruside F (14).
authors.affiliation: National Center for Natural Products Research, School of Pharmacy, University of Mississippi, University, MS 38677, USA.
authors.forename: Swarna D
authors.initials: SD
authors.lastname: Hapuarachchi
authors.forename: Zulfiqar
authors.initials: Z
authors.lastname: Ali
authors.forename: Naohito
authors.initials: N
authors.lastname: Abe
authors.forename: Suresh T
authors.initials: ST
authors.lastname: Sugandhika
authors.forename: Senerath T P
authors.initials: ST
authors.lastname: Sandun
authors.forename: Ikhlas A
authors.initials: IA
authors.lastname: Khan
mesh_terms: D035685:Andrographis / Q000737:chemistry*; D047309:Flavones / Q000737:chemistry*; D005960:Glucosides / Q000737:chemistry*; D009682:Magnetic Resonance Spectroscopy; D013058:Mass Spectrometry; D015394:Molecular Structure
chemical_list: D047309:Flavones; D005960:Glucosides; C043562:flavone