title: New diarylheptanoids and a hydroxylated ottelione from Ottelia alismoides.
abstract: Ten new diarylheptanoids (2, 3, 4, 5a-d, 6, 7, and 8) have been isolated from an extract of Ottelia alismoides. The structures of these previously unknown metabolites were determined by NMR spectroscopic analysis. A previously unknown, hydroxylated analog of the known otteliones A and B (1a and 1b)--namely, 3a-hydroxyottelione (13)--was also isolated. The 1H NMR analysis of the Mosher esters of alcohols derived from otteliones A and B (S-17/R-17 and S-20/R-20) are also reported.
authors.affiliation: Department of Chemistry, University of Minnesota, Minneapolis, Minnesota 55455, USA. hoye@umn.edu
authors.forename: Thomas R
authors.initials: TR
authors.lastname: Hoye
authors.forename: Seif-Eldin N
authors.initials: SE
authors.lastname: Ayyad
authors.forename: Hollie J
authors.initials: HJ
authors.lastname: Beckord
authors.forename: Susan G
authors.initials: SG
authors.lastname: Brown
mesh_terms: D003512:Cyclohexanones / Q000737:chemistry*; D036381:Diarylheptanoids / Q000737:chemistry*; D031321:Hydrocharitaceae / Q000737:chemistry*; D006900:Hydroxylation
chemical_list: D003512:Cyclohexanones; D036381:Diarylheptanoids