title: Triterpenes and flavonol glucuronides from Oenothera cheiranthifolia.
abstract: A new ursane-type triterpene, named as cheiranthic acid (1), was isolated from the MeOH extract of whole plants of Oenothera cheiranthifolia (Onagraceae) along with an isomeric pair of known oleanane- and ursane-type triterpenes (arjunolic acid and asiatic acid) and three flavonol glucuronide analogues (quercetin 3-O-glucuronide, its n-butyl ester, and myricetin 3-O-glucuronide). Their structures were elucidated based on spectroscopic evidence.
authors.affiliation: Faculty of Pharmaceutical Sciences, Setsunan University, Hirakata, Osaka, Japan. nakanisi@paharm.setsunan.ac.jp
authors.forename: Tsutomu
authors.initials: T
authors.lastname: Nakanishi
authors.forename: Yuka
authors.initials: Y
authors.lastname: Inatomi
authors.forename: Hiroko
authors.initials: H
authors.lastname: Murata
authors.forename: Syun-Suke
authors.initials: SS
authors.lastname: Ishida
authors.forename: Yuri
authors.initials: Y
authors.lastname: Fujino
authors.forename: Kanako
authors.initials: K
authors.lastname: Miura
authors.forename: Yoshito
authors.initials: Y
authors.lastname: Yasuno
authors.forename: Akira
authors.initials: A
authors.lastname: Inada
authors.forename: Frank A
authors.initials: FA
authors.lastname: Lang
authors.forename: Jin
authors.initials: J
authors.lastname: Murata
mesh_terms: D004952:Esters / Q000737:chemistry / Q000302:isolation & purification; D005419:Flavonoids / Q000737:chemistry / Q000302:isolation & purification; D044948:Flavonols / Q000737:chemistry / Q000302:isolation & purification*; D020719:Glucuronides / Q000737:chemistry / Q000302:isolation & purification*; D007536:Isomerism; D000432:Methanol / Q000737:chemistry; D015394:Molecular Structure; D031664:Oenothera / Q000737:chemistry*; D009828:Oleanolic Acid / Q000031:analogs & derivatives / Q000737:chemistry / Q000302:isolation & purification; D010936:Plant Extracts / Q000737:chemistry; D010946:Plants, Medicinal / Q000737:chemistry*; D011794:Quercetin / Q000031:analogs & derivatives / Q000737:chemistry / Q000302:isolation & purification; D013057:Spectrum Analysis; D014315:Triterpenes / Q000737:chemistry / Q000302:isolation & purification*
chemical_list: D004952:Esters; D005419:Flavonoids; D044948:Flavonols; D020719:Glucuronides; D010936:Plant Extracts; D014315:Triterpenes; C413246:oleanane; C443401:quercetin 3-O-glucuronide; D009828:Oleanolic Acid; C072578:myricetin 3-O-glucuronide; D011794:Quercetin; D000432:Methanol