RESUMO
Two new fatty acid glucosides, (3E,8Z)-8-carboxy-1-(O-beta-D-glucopyranosyl)-2,6-dihydroxytritriaconta-3,8-diene (1) and (8Z)-8-carboxy-1-(O-beta-D-glucopyranosyl)-3,4-epoxy-2,6-dihydroxytritriacont-8-ene (2), have been isolated from the root bark of Ochna calodendron and their structures elucidated by extensive two-dimensional NMR methods including HMQC, HMBC and NOESY experiments.
Assuntos
Ácidos Graxos Insaturados/química , Ácidos Graxos/química , Glucosídeos/química , Magnoliopsida , Fitoterapia , Extratos Vegetais/química , Humanos , Raízes de PlantasRESUMO
Two known 7,8-dihydrobenzofuranones, aquilegiolide (1) and menisdaurilide (2), were isolated from Ouratea reticulata root bark.
Assuntos
Benzofuranos/química , Magnoliopsida , Extratos Vegetais/química , Humanos , Espectroscopia de Ressonância Magnética , Casca de Planta/química , Raízes de PlantasRESUMO
Three new isoflavonoids, griffonianone A (1), B (2) and C (4) were isolated from the root bark of Millettia griffoniana, along with the known maximaisoflavone G (5) and 7-hydroxy-6-methoxy-3',4'-methylenedioxyisoflavone (6). Their structures were assigned on the basis of spectroscopic data and chemical transformations.
Assuntos
Fabaceae/química , Isoflavonas/isolamento & purificação , Plantas Medicinais , Isoflavonas/química , Espectroscopia de Ressonância Magnética , Raízes de Plantas/químicaRESUMO
A new dimeric proanthocyanidin, calodenin C [guibourtinidol-(4alpha-->8)-afzelechin], was isolated from the stem bark of Ochna calodendron and its structure determined on the basis of chemical studies and spectroscopic data, including HMBC and ROESY experiments.
