title: New dihydrophenanthrene and phenyldihydroisocoumarin constituents of Trema orientalis.
abstract: In the course of the chemical investigation of extracts of the trunk bark and root bark of Trema orientalis, three new compounds were isolated, namely, (9S*,10S*)-3-[7-(3,10-dihydroxy-9-hydroxymethyl-2,5-dimethoxy)-9,10-dihydrophenanthrenyl]propenal (1), (9S*,10S*)-3-[7-(5-O-beta-glucopyranosyl-10-hydroxy-9-hydroxymethyl-2,6-dimethoxy)-9,10-dihydrophenanthrenyl]propenal (2), and (3R*,3aR*,4R*,5S*)-6-O-alpha-arabinopyranosyl-8-hydroxy-3-(4-hydroxyphenyl)-4-(4-hydroxyphenyl)-5-(3,5-dihydroxyphenyl)-3,3a-dihydrocyclopenta[1,2,3-de]isobenzopyran-1-one (3, orientoside A). The structures of 1-3 were determined by spectral methods.
authors: Laboratoire de Pharmacognosie, DPM UMR 5063 CNRS-UJF, Faculté de Pharmacie, Université de Grenoble I, Domaine de La Merci, 38706 La Tronche Cedex, France. Marie-Genevieve.Dijoux@ujf-grenoble.fr
authors: M G
authors: MG
authors: Dijoux-Franca
authors: D
authors: D
authors: Noungoué Tchamo
authors: B
authors: B
authors: Cherel
authors: M
authors: M
authors: Cussac
authors: E
authors: E
authors: Tsamo
authors: A M
authors: AM
authors: Mariotte
mesh_terms: D002163:Cameroon; D003374:Coumarins / Q000737:chemistry*; D009682:Magnetic Resonance Spectroscopy; D013058:Mass Spectrometry; D010616:Phenanthrenes / Q000737:chemistry*; D019441:Plant Epidermis / Q000737:chemistry; D018517:Plant Roots / Q000737:chemistry; D010946:Plants, Medicinal / Q000737:chemistry*; D013055:Spectrophotometry, Infrared; D013056:Spectrophotometry, Ultraviolet
chemical_list: C433630:3-(7-(3,10-dihydroxy-9-hydroxymethyl-2,5-dimethoxy)-9,10-dihydrophenanthrenyl)propenal; D003374:Coumarins; D010616:Phenanthrenes