title: Immunosuppressive sesquiterpene alkaloids from Tripterygium wilfordii.
abstract: Nine new sesquiterpene pyridine alkaloids [wilfornines A (1), B (2), C (3), D (4), E (5), F (8), and G (9); wilfordinines I (6) and J (7)] and six known compounds (10-15) were isolated from a clinically used extract (T(II)) of Tripterygium wilfordii. The structures of 1-9 were elucidated by spectroscopic and chemical methods. The inhibitory effects on cytokine production of 1-3 and several related compounds were evaluated. Compounds 10 and 14 showed significant inhibitory effects on cytokine production.
authors.affiliation: Faculty of Pharmaceutical Sciences, University of Tokushima, Shomachi 1-78, Tokushima 770-8505, Japan.
authors.forename: H
authors.initials: H
authors.lastname: Duan
authors.forename: Y
authors.initials: Y
authors.lastname: Takaishi
authors.forename: H
authors.initials: H
authors.lastname: Momota
authors.forename: Y
authors.initials: Y
authors.lastname: Ohmoto
authors.forename: T
authors.initials: T
authors.lastname: Taki
authors.forename: Y
authors.initials: Y
authors.lastname: Jia
authors.forename: D
authors.initials: D
authors.lastname: Li
mesh_terms: D000470:Alkaloids / Q000302:isolation & purification / Q000494:pharmacology*; D000893:Anti-Inflammatory Agents / Q000494:pharmacology; D002681:China; D016207:Cytokines / Q000096:biosynthesis; D006801:Humans; D007166:Immunosuppressive Agents / Q000302:isolation & purification / Q000494:pharmacology*; D009682:Magnetic Resonance Spectroscopy; D009000:Monocytes / Q000187:drug effects / Q000378:metabolism; D010946:Plants, Medicinal / Q000737:chemistry*; D011239:Prednisolone / Q000494:pharmacology; D012717:Sesquiterpenes / Q000302:isolation & purification / Q000494:pharmacology*; D016339:Spectrometry, Mass, Fast Atom Bombardment; D013055:Spectrophotometry, Infrared
chemical_list: D000470:Alkaloids; D000893:Anti-Inflammatory Agents; D016207:Cytokines; D007166:Immunosuppressive Agents; D012717:Sesquiterpenes; D011239:Prednisolone