title: Sesquiterpenes and aliphatic diketones from cultures of the basidiomycete Conocybe siliginea.
abstract: Five new tremulane-type sesquiterpenes, 11,12-dihydroxy-1-tremulen-5-one (1), 11,12-epoxy-12beta-hydroxy-1-tremulen-5-one (2), 5alpha,12-dihydroxy-1-tremulen-11-yl 2(S)-pyroglutamate (3), 2alpha,11-dihydroxy-1(10)-tremulen-5,12-olide (4), and 10beta,11-dihydroxy-5,6- seco-1,6(13)-tremuladien-5,12-olide (5), as well as three new aliphatic diketones, 2,3-dihydroxydodecane-4,7-dione (9 and 10) and 1-hydroxydecane-2,5-dione (11), together with three known sesquiterpene analogues, tremulenediol A (6), conocenol B (7), and conocenolide A (8), were isolated from cultures of the basidiomycete Conocybe siliginea.
authors.affiliation: State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650204, People's Republic of China.
authors.forename: Zhong-Yu
authors.initials: ZY
authors.lastname: Zhou
authors.forename: Jian-Guo
authors.initials: JG
authors.lastname: Tang
authors.forename: Fei
authors.initials: F
authors.lastname: Wang
authors.forename: Ze-Jun
authors.initials: ZJ
authors.lastname: Dong
authors.forename: Ji-Kai
authors.initials: JK
authors.lastname: Liu
mesh_terms: D001487:Basidiomycota / Q000378:metabolism*; D005285:Fermentation; D007659:Ketones / Q000302:isolation & purification*; D009682:Magnetic Resonance Spectroscopy; D012717:Sesquiterpenes / Q000302:isolation & purification*; D021241:Spectrometry, Mass, Electrospray Ionization; D013055:Spectrophotometry, Infrared
chemical_list: D007659:Ketones; D012717:Sesquiterpenes