title: New labdane diterpene glycosides from Amphiachyris amoena.
abstract: Five new labdane diterpene glycosides, amoenolide A 19-beta-D-glucopyranoside [1], and amoenolides E [3], F [4], G [6], and H [8] were isolated from the above-ground parts of Amphiachyris amoena. Amoenolide F is a 19-beta-D-glucopyranoside, while the others are 6-alpha-L-arabinopyranosides. Their structures were established by chemical and spectral methods, especially high-field nmr techniques, and complete 1H- and 13C-nmr assignments are given.
authors.affiliation: Division of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, Ohio State University, Columbus 43210-1291.
authors.forename: D P
authors.initials: DP
authors.lastname: O'Mathúna
authors.forename: R W
authors.initials: RW
authors.lastname: Doskotch
mesh_terms: D002240:Carbohydrate Sequence; D002853:Chromatography, Liquid; D004224:Diterpenes / Q000737:chemistry / Q000302:isolation & purification*; D006027:Glycosides / Q000737:chemistry / Q000302:isolation & purification*; D008969:Molecular Sequence Data; D010944:Plants / Q000737:chemistry*; D013057:Spectrum Analysis
chemical_list: D004224:Diterpenes; D006027:Glycosides