title: A new labdane diterpene from Leonurus heterophyllus.
abstract: A new labdane diterpene, heteronone B (1), together with a known labdane diterpene, heteronone A (2), have been isolated from the aerial part of Leonurus heterophyllus. Their structures were established mainly by 1D and 2D NMR analysis and the stereochemistry of 2 was confirmed by single-crystal X-ray diffraction analysis.
authors.affiliation: School of Chinese Medicine, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong, SAR, China.
authors.forename: X-H
authors.initials: XH
authors.lastname: Cai
authors.forename: C-T
authors.initials: CT
authors.lastname: Che
authors.forename: C-K
authors.initials: CK
authors.lastname: Lam
authors.forename: T C W
authors.initials: TC
authors.lastname: Mak
authors.forename: L-J
authors.initials: LJ
authors.lastname: Wu
mesh_terms: D002681:China; D002845:Chromatography; D004224:Diterpenes / Q000737:chemistry* / Q000302:isolation & purification; D031332:Leonurus / Q000737:chemistry*; D015394:Molecular Structure; D035261:Plant Components, Aerial / Q000737:chemistry*; D010946:Plants, Medicinal / Q000737:chemistry*; D013053:Spectrophotometry; D014961:X-Ray Diffraction
chemical_list: D004224:Diterpenes; C518094:heteronone B