title: Constituents of the roots of Melochia chamaedrys.
abstract: The cyclic peptide alkaloid, chamaedrine, was isolated from the roots of Melochia chamaedris (Sterculiaceae), along with four known cyclic peptide alkaloids (adouetine X, frangulaline, scutianine B and scutianine C), and waltherione A, parasorbic acid, propacine, and (-)-epicatequine. Their structures were elucidated on the basis of spectroscopic analysis, especially by 2D NMR ((1)H-(1)H-COSY, NOESY, HMQC, HMBC).
authors.affiliation: Departamento de Química, NPPN, Universidade Federal de Santa Maria, 97045-100 Santa Maria, RS, Brazil.
authors.forename: G C D
authors.initials: GC
authors.lastname: Dias
authors.forename: V
authors.initials: V
authors.lastname: Gressler
authors.forename: S C S M
authors.initials: SC
authors.lastname: Hoenzel
authors.forename: U F
authors.initials: UF
authors.lastname: Silva
authors.forename: I I
authors.initials: II
authors.lastname: Dalcol
authors.forename: A F
authors.initials: AF
authors.lastname: Morel
mesh_terms: D000470:Alkaloids / Q000737:chemistry* / Q000302:isolation & purification; D000596:Amino Acids / Q000032:analysis; D006868:Hydrolysis; D009682:Magnetic Resonance Spectroscopy; D019660:Malvaceae / Q000737:chemistry*; D008968:Molecular Conformation; D010456:Peptides, Cyclic / Q000737:chemistry* / Q000302:isolation & purification; D010936:Plant Extracts / Q000737:chemistry* / Q000302:isolation & purification; D018517:Plant Roots / Q000737:chemistry*
chemical_list: D000470:Alkaloids; D000596:Amino Acids; D010456:Peptides, Cyclic; D010936:Plant Extracts