title: Complete assignments of 1H and 13C NMR data for three new arylnaphthalene lignan from Justicia procumbens.
abstract: Three new arylnaphthalene lignans, named neojusticin C (1), procumbenoside C (2) and procumbenoside D (3), have been isolated from the whole plant of Justicia procumbens, together with three known ones, justicidinoside B (4), justicidinoside C (5), and diphyllin-1-O-beta-D-apiofuranoside (6). The complete assignments of 1H and 13C NMR data for three new lignans were first obtained by means of 2D NMR techniques, including HSQC and HMBC.
authors.affiliation: Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100094, P.R. China.
authors.forename: Guorui
authors.initials: G
authors.lastname: Liu
authors.forename: Jun
authors.initials: J
authors.lastname: Wu
authors.forename: Jianyong
authors.initials: J
authors.lastname: Si
authors.forename: Junmei
authors.initials: J
authors.lastname: Wang
authors.forename: Meihua
authors.initials: M
authors.lastname: Yang
mesh_terms: D027901:Acanthaceae / Q000737:chemistry*; D002247:Carbon Isotopes; D017705:Lignans / Q000737:chemistry* / Q000302:isolation & purification; D009682:Magnetic Resonance Spectroscopy / Q000379:methods / Q000592:standards*; D008516:Medicine, Chinese Traditional; D015394:Molecular Structure; D009281:Naphthalenes / Q000737:chemistry* / Q000302:isolation & purification; D010946:Plants, Medicinal / Q000737:chemistry; D011522:Protons
chemical_list: D002247:Carbon Isotopes; D017705:Lignans; D009281:Naphthalenes; D011522:Protons; C528025:neojusticin C; C528027:procumbenoside C; C528026:procumbenoside D