title: Oligomeric hydrolyzable tannins from Monochaetum multiflorum.
abstract: Four hydrolyzable tannins, nobotanins Q, R, S, and T, were isolated from the aqueous acetone extract of the dried leaves of Monochaetum multiflorum (Melastomataceae), a plant indigenous to Colombia. Their dimeric and tetrameric structures were elucidated by spectral and chemical methods. Eight known hydrolyzable tannin monomers and eight ellagitannin oligomers characteristic of melastomataceous plants were also characterized as tannin constituents of the plant.
authors.affiliation: Faculty of Pharmaceutical Sciences, Okayama University, Tsushima, Okayama 700-8530, Japan.
authors.forename: José H
authors.initials: JH
authors.lastname: Isaza
authors.forename: Hideyuki
authors.initials: H
authors.lastname: Ito
authors.forename: Takashi
authors.initials: T
authors.lastname: Yoshida
mesh_terms: D019281:Dimerization; D005947:Glucose / Q000737:chemistry; D006868:Hydrolysis; D047348:Hydrolyzable Tannins; D035322:Melastomataceae / Q000737:chemistry*; D015394:Molecular Structure; D019906:Nuclear Magnetic Resonance, Biomolecular; D010936:Plant Extracts / Q000737:chemistry; D018515:Plant Leaves / Q000737:chemistry; D013634:Tannins / Q000737:chemistry* / Q000302:isolation & purification
chemical_list: D047348:Hydrolyzable Tannins; D010936:Plant Extracts; D013634:Tannins; C013515:ellagitannin; D005947:Glucose