title: Chodatiionosides A and B: two new megastigmane glycosides from Chorisia chodatii leaves.
abstract: Phytochemical investigation of Chorisia chodatii Hassl. leaves led to the isolation of an unusual rearranged megastigmane glycoside; chodatiionoside A (1) and another new megastigmane glycoside; chodatiionoside B (2), together with three known megastigmane glycosides (3-5) and one known flavonoid glycoside (6). Their structures were elucidated by spectroscopic methods including 1D and 2D NMR experiments (1H,13C, DEPT, COSY, HSQC and HMBC) in combination with HR-ESI-MS, CD and modified Mosher's method. As a result, chodatiionoside A has been elucidated as a first example of an unusual rearranged form of megastigmane.
authors.affiliation: Department of Pharmacognosy, Graduate School of Biomedical and Health Sciences, Hiroshima University, 1-2-3 Kasumi, Minami-ku, Hiroshima, 734-8553, Japan.|Department of Pharmacognosy, Faculty of Pharmacy, Minia University, Minia, 61519, Egypt.
authors.forename: Mamdouh Nabil
authors.initials: MN
authors.lastname: Samy
authors.affiliation: Department of Pharmacognosy, Faculty of Pharmacy, Minia University, Minia, 61519, Egypt.
authors.forename: John Refaat
authors.initials: JR
authors.lastname: Fahim
authors.affiliation: Department of Pharmacognosy, Graduate School of Biomedical and Health Sciences, Hiroshima University, 1-2-3 Kasumi, Minami-ku, Hiroshima, 734-8553, Japan.
authors.forename: Sachiko
authors.initials: S
authors.lastname: Sugimoto
authors.affiliation: Department of Pharmacognosy, Graduate School of Biomedical and Health Sciences, Hiroshima University, 1-2-3 Kasumi, Minami-ku, Hiroshima, 734-8553, Japan.|Department of Natural Products Chemistry, Faculty of Pharmacy, Yasuda Women's University, 6-13-1 Yasuhigashi, Asaminami-ku, Hiroshima, 731-0153, Japan.
authors.forename: Hideaki
authors.initials: H
authors.lastname: Otsuka
authors.affiliation: Department of Pharmacognosy, Graduate School of Biomedical and Health Sciences, Hiroshima University, 1-2-3 Kasumi, Minami-ku, Hiroshima, 734-8553, Japan. matunami@hiroshima-u.ac.jp.
authors.forename: Katsuyoshi
authors.initials: K
authors.lastname: Matsunami
authors.affiliation: Department of Pharmacognosy, Faculty of Pharmacy, Minia University, Minia, 61519, Egypt.
authors.forename: Mohamed Salah
authors.initials: MS
authors.lastname: Kamel
mesh_terms: D003512:Cyclohexanones / Q000737:chemistry*; D005960:Glucosides / Q000737:chemistry*; D015394:Molecular Structure; D045792:Norisoprenoids / Q000737:chemistry*; D018515:Plant Leaves / Q000737:chemistry*
chemical_list: D003512:Cyclohexanones; D005960:Glucosides; D045792:Norisoprenoids; C413264:megastigmane
keywords: Bombacaceae; Chodatiionoside; Chorisia chodatii; Megastigmane glycoside