Agricultural and Biological Chemistry · 1982 · 55 citations · 0 references
Life SciencesBotanyPlant SciencesOrganic ChemistryPlant BiochemistryStructure-activity RelationshipsAntioxidant DefenseFood AntioxidantsMedicinal PlantsPhenolic Compound AnalysisStructure-activity Relationship AnalysisActive Compound IsolationAntioxidant Natural ProductsBioactive Plant CompoundsMedicinal Aromatic PlantsPhenolic Compound Antioxidant CapacityPlant Extract AntioxidantsPlant PhenolicsSpectroscopic Characterization
A new antioxidant, phenolic diterpene, named rosmanol, was isolated from the leaves of rosemary (Rosmarinus officinalis L.). Its structure has been determined as 7β,11,12-trihydroxy-6,10-(epoxymethano)abieta-8,11,13-trien-20-one on the basis of chemical and spectroscopic evidence. In addition, all the protons of rosmanol (II) as well as carnosol (I), including the methylene protons of the A ring, were analyzed by 400 MHz 1-NMR.