RESUMEN
Two new bisabolane-type sesquiterpenoids, (3R,4R,6S)-3,4-epoxybisabola-7(14),10-dien-2-one and (1R,3R,4R,5S,6S)-1-acetoxy-8-angeloyloxy-3,4-epoxy-5-hydroxybisabola-7(14),10-dien-2-one, and a new oplopane-type sesquiterpenoid, 14(R)-hydroxy-7beta-isovaleroyloxyoplop-8(10)-en-2-one, were isolated from Farfarae Flos along with three known compounds. The structures of these compounds were elucidated on the basis of spectroscopic evidence.
Asunto(s)
Asteraceae/química , Plantas Medicinales/química , Sesquiterpenos/química , Acetilación , Espectroscopía de Resonancia Magnética , Espectrometría de Masas , Espectrofotometría Infrarroja , Espectrofotometría UltravioletaRESUMEN
Two new secoiridoid glycosides, 4'-O-beta-D-glucopyranosylgentiopicroside (1) and 6'-O-beta-D-glucopyranosylgentiopicroside (2), have been isolated from the rhizomes and roots of Gentiana scabra together with three known compounds, olivieroside, 1-O-beta-D-glucopyranosylamplexine, and benzyl alcohol O-alpha-L-arabinopyranosyl (1 --> 6)-beta-D-glucopyranoside. The structures of 1 and 2 were elucidated using chemical and physicochemical (MS and NMR) studies.
Asunto(s)
Gentianaceae/química , Glicósidos/aislamiento & purificación , Plantas Medicinales/química , Piranos/aislamiento & purificación , China , Cromatografía de Gases , Cromatografía Líquida de Alta Presión , Glicósidos/química , Estructura Molecular , Resonancia Magnética Nuclear Biomolecular , Piranos/química , Rizoma/química , Espectrofotometría UltravioletaRESUMEN
Four new terpenoids, gardenate A (1), 2-hydroxyethyl gardenamide A (2), (1R,7R,8S,10R)-7,8,11-trihydroxyguai-4-en-3-one 8-O-beta-D-glucopyranoside (3) and Jasminoside F (4), were isolated from Gardeniae Fructus. Their structures were established on the basis of spectral analysis.