title: Ylangene-type and nardosinane-type sesquiterpenoids from the soft corals Lemnalia flava and Paralemnalia thyrsoides.
abstract: Chemical investigations of the Formosan soft coral Lemnalia flava have obtained a new ylangene-type sesquiterpenoid, (1S,2S,4R,6S,7R,8S)-4alpha-formyloxy-beta-ylangene (1), along with two known sesquiterpenoids, lemnalol (2) and isolemnalol (3). Three new nardosinane-type sesquiterpenoids, designated as paralemnolins J-L (4-6), and five known sesquiterpenoids (7-11), were isolated from the other soft coral Paralemnalia thyrsoides. The structures of metabolites 1 and 4-6 were elucidated through extensive spectroscopic analysis and chemical methods. Moreover, the anti-inflammatory activity of metabolites 1-7 and 11 was evaluated in vitro.
authors.affiliation: Department of Marine Biotechnology and Resources, National Sun Yat-sen University.
authors.forename: Shi-Yie
authors.initials: SY
authors.lastname: Cheng
authors.forename: En-Hung
authors.initials: EH
authors.lastname: Lin
authors.forename: Jing-Shi
authors.initials: JS
authors.lastname: Huang
authors.forename: Zhi-Hong
authors.initials: ZH
authors.lastname: Wen
authors.forename: Chang-Yih
authors.initials: CY
authors.lastname: Duh
mesh_terms: D000818:Animals; D037421:Anthozoa / Q000737:chemistry* / Q000378:metabolism; D000893:Anti-Inflammatory Agents / Q000737:chemistry* / Q000302:isolation & purification / Q000494:pharmacology; D051546:Cyclooxygenase 2 / Q000378:metabolism; D015971:Gene Expression Regulation, Enzymologic / Q000187:drug effects; D008070:Lipopolysaccharides / Q000037:antagonists & inhibitors / Q000494:pharmacology; D008264:Macrophages / Q000187:drug effects / Q000201:enzymology; D051379:Mice; D008958:Models, Molecular; D008968:Molecular Conformation; D052247:Nitric Oxide Synthase Type II / Q000037:antagonists & inhibitors / Q000378:metabolism; D012717:Sesquiterpenes / Q000737:chemistry* / Q000302:isolation & purification / Q000494:pharmacology; D013045:Species Specificity; D013237:Stereoisomerism; D013329:Structure-Activity Relationship
chemical_list: C549741:(1S,2S,4R,6S,7R,8S)-4alpha-formyloxy-beta-ylangene; D000893:Anti-Inflammatory Agents; D008070:Lipopolysaccharides; D012717:Sesquiterpenes; D052247:Nitric Oxide Synthase Type II; D051546:Cyclooxygenase 2