title: Studies on the constituents of Catalpa species. IX. Iridoids from the fallen leaves of Catalpa ovata G. Don.
abstract: Two new iridoids, 6-O-trans-p-coumaroyl-7-deoxyrehmaglutin A (1) and 6-O-cis-p-coumaroyl-7-deoxyrehmaglutin A (2), were isolated from the fallen leaves of Catalpa ovata G. DON. together with six artifact iridoids (3-8). Their structures were established by spectral analysis. In addition, the scavenging effects of the principal compounds isolated from this plant on 1,1-diphenyl-2-picrylhydrazyl radical-scavenging activity were examined.
authors.affiliation: Tohoku Pharmaceutical University, Miyagi, Japan.
authors.forename: Koichi
authors.initials: K
authors.lastname: Machida
authors.forename: Erika
authors.initials: E
authors.lastname: Hishinuma
authors.forename: Masao
authors.initials: M
authors.lastname: Kikuchi
mesh_terms: D029402:Bignoniaceae; D039823:Iridoids / Q000737:chemistry* / Q000302:isolation & purification*; D010936:Plant Extracts / Q000737:chemistry / Q000302:isolation & purification; D018515:Plant Leaves
chemical_list: D039823:Iridoids; D010936:Plant Extracts