title: Ellagitannins from Geranium potentillaefolium and G. bellum.
abstract: The aerial parts of Geranium potentillaefoium afforded geraniin (1), corilagin (2), gallic acid (4), methyl gallate (6), methyl brevifolincarboxylate (7), quercetin, quercetin 3-O-beta-D-glucopyranoside, quercetin 3-O-beta-D-[6"-O-galloyl)glucopyranoside, kaempferol, beta-sitosterol 3-O-beta-D-glucopyranoside and beta-sitosterol, while the aerial parts of G. bellum gave the same compounds in addition to kaempferol 3-O-beta-D-glucopyranoside, isolated instead of kaempferol. The substances were identified by 1D and 2D NMR spectroscopy in comparison with published data. The water decoction preparations from air-dried plant materials (2.5 g) contain ca. 4.6 % of the ellagitannin 1, envisaging that when such decoction is ingested (250 mL), a therapeutic dose of ca. 36 mg of the antitumor ellagic acid (3) may be incorporated into the organism.
authors.affiliation: Centro de Investigaciones Químicas, Universidad Autónoma del Estado de Hidalgo, Hidalgo, México.
authors.forename: Juan A
authors.initials: JA
authors.lastname: Gayosso-De-Lucio
authors.forename: J Martín
authors.initials: JM
authors.lastname: Torres-Valencia
authors.forename: Carlos M
authors.initials: CM
authors.lastname: Cerda-García-Rojas
authors.forename: Pedro
authors.initials: P
authors.lastname: Joseph-Nathan
mesh_terms: D031315:Geranium / Q000737:chemistry*; D047348:Hydrolyzable Tannins / Q000737:chemistry / Q000302:isolation & purification*; D019906:Nuclear Magnetic Resonance, Biomolecular; D035261:Plant Components, Aerial / Q000737:chemistry
chemical_list: D047348:Hydrolyzable Tannins