title: Compounds from Kadsura heteroclita and related anti-HIV activity.
abstract: Phytochemical investigation of the stems of Kadsura heteroclita led to isolation of 16 compounds, including the triterpenoid named longipedlactone J (2), and two dibenzocyclooctadiene type lignans named heteroclitin I and J (3, 4). Compounds 8-10, 14, and 15 were weakly active as anti-HIV agents, whereas compounds 6 and 12 exhibited moderate anti-HIV activity with EC50 values of 1.6 microg/mL, and 1.4 microg/mL, therapeutic index (TI) values of 52.9, and 65.9, respectively. Their structures were established by spectroscopic methods, including application of 2D NMR techniques and CD spectra.
authors.affiliation: State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650204, Yunnan, PR China.
authors.forename: Jian-Xin
authors.initials: JX
authors.lastname: Pu
authors.forename: Liu-Meng
authors.initials: LM
authors.lastname: Yang
authors.forename: Wei-Lie
authors.initials: WL
authors.lastname: Xiao
authors.forename: Rong-Tao
authors.initials: RT
authors.lastname: Li
authors.forename: Chun
authors.initials: C
authors.lastname: Lei
authors.forename: Xue-Mei
authors.initials: XM
authors.lastname: Gao
authors.forename: Sheng-Xiong
authors.initials: SX
authors.lastname: Huang
authors.forename: Sheng-Hong
authors.initials: SH
authors.lastname: Li
authors.forename: Yong-Tang
authors.initials: YT
authors.lastname: Zheng
authors.forename: Hao
authors.initials: H
authors.lastname: Huang
authors.forename: Han-Dong
authors.initials: HD
authors.lastname: Sun
mesh_terms: D019380:Anti-HIV Agents / Q000737:chemistry* / Q000302:isolation & purification / Q000494:pharmacology*; D002460:Cell Line; D049109:Cell Proliferation / Q000187:drug effects; D018360:Crystallography, X-Ray; D034242:Cyclooctanes / Q000737:chemistry* / Q000302:isolation & purification / Q000494:pharmacology*; D004305:Dose-Response Relationship, Drug; D015497:HIV-1 / Q000187:drug effects*; D006801:Humans; D032135:Kadsura / Q000737:chemistry*; D017705:Lignans / Q000737:chemistry* / Q000302:isolation & purification / Q000494:pharmacology*; D009682:Magnetic Resonance Spectroscopy / Q000379:methods / Q000592:standards; D008826:Microbial Sensitivity Tests; D008958:Models, Molecular; D008968:Molecular Conformation; D012015:Reference Standards; D013237:Stereoisomerism; D013329:Structure-Activity Relationship; D014315:Triterpenes / Q000737:chemistry* / Q000302:isolation & purification / Q000494:pharmacology*
chemical_list: D019380:Anti-HIV Agents; D034242:Cyclooctanes; D017705:Lignans; D014315:Triterpenes; C530585:heteroclitin I; C530586:heteroclitin J; C530584:longipedlactone J