title: New 3,4-seco-Grayanane Diterpenoids from the Flowers of Pieris japonica.
abstract: Three new 3,4-seco-grayanane diterpenoids, neopierisoids D-F (2-4), and a new natural one, neopierisoid C (1), were isolated from the flowers of Pieris japonica. Their structures were elucidated on the basis of extensive spectroscopic analysis, including one and two dimensional (1- and 2D)-NMR, as well as high resolution-electron ionization (HR-EI)-MS.
authors.affiliation: Faculty of Life Science and Technology, Kunming University of Science and Technology.
authors.forename: Lang
authors.initials: L
authors.lastname: Cao
authors.forename: Yanping
authors.initials: Y
authors.lastname: Li
authors.forename: Hongmei
authors.initials: H
authors.lastname: Li
authors.forename: Dan
authors.initials: D
authors.lastname: Liu
authors.forename: Rongtao
authors.initials: R
authors.lastname: Li
mesh_terms: D004224:Diterpenes / Q000737:chemistry / Q000302:isolation & purification*; D029791:Ericaceae / Q000737:chemistry*; D035264:Flowers / Q000737:chemistry*; D008968:Molecular Conformation
chemical_list: C550224:3,4-secograyanane; D004224:Diterpenes