title: Terpenoids from the stems of Cipadessa baccifera.
abstract: In our systematical investigation on Chinese Meliaceae plants, the stems of Cipadessa baccifera collected in Yunnan province were studied. Two new tetranortriterpenoids, cipadessalide ( 1) and rubralin D ( 2), one new pregnane, 3beta,4beta-dihydroxy-2beta-acetoxypregnan-16-one ( 3), and two new sesquiterpenoids, bacciferins A ( 4) and B ( 5), along with 10 known compounds were isolated. Their structures were elucidated by 1D and 2D NMR spectra and other spectroscopic studies, as well as chemical conversion.
authors.affiliation: State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zu-Chong-Zhi Road, Zhangjiang Hi-Tech Park, Shanghai 201203, People's Republic of China.
authors.forename: Li-Gen
authors.initials: LG
authors.lastname: Lin
authors.forename: Chun-Ping
authors.initials: CP
authors.lastname: Tang
authors.forename: Chang-Qiang
authors.initials: CQ
authors.lastname: Ke
authors.forename: Yi
authors.initials: Y
authors.lastname: Zhang
authors.forename: Yang
authors.initials: Y
authors.lastname: Ye
mesh_terms: D004365:Drugs, Chinese Herbal / Q000737:chemistry / Q000302:isolation & purification*; D029582:Meliaceae / Q000737:chemistry*; D015394:Molecular Structure; D019906:Nuclear Magnetic Resonance, Biomolecular; D018547:Plant Stems / Q000737:chemistry; D010946:Plants, Medicinal / Q000737:chemistry*; D011278:Pregnanes / Q000737:chemistry / Q000302:isolation & purification; D013729:Terpenes / Q000737:chemistry / Q000302:isolation & purification*
chemical_list: D004365:Drugs, Chinese Herbal; D011278:Pregnanes; D013729:Terpenes