C NMR-Based Empirical Rules to Determine the Configuration of Fatty Acid Butanolides. Novel y-Dilactones from Pterogorgia spp
نویسندگان
چکیده
Instituto de Productos Naturales y Agrobiologia del CSIC, Avenida Astrofisico F. Sanchez, 3, 38206 La Laguna, Tenerife, Spain, Universidad de Magallanes, Avenida Bulnes 01855, and Centro de Estudios del Cuaternario, Casilla 113-D, Punta Arenas, Chile, Smithsonian Tropical Research Institute (STRI), P.O. Box 2072, Balboa, Panama, and Departamento de Biologia Marina y Limnologia, Estafeta Universitaria, Universidad de Panama, Panama
منابع مشابه
13C NMR-based empirical rules to determine the configuration of fatty acid butanolides. Novel gamma-dilactones from Pterogorgia spp.
Diastereomeric gamma-dilactones isolated from Pterogorgia spp allowed the establishment of (13)C NMR-based empirical rules to determine the relative stereochemistry of 3-alkyl-4-hydroxy-5-methyl-2(5H)-dihydrofuranones, gamma-lactone moieties ubiquitous in many bioactive synthetic and natural products. An NMR-based method using Pirkle's reagent at low temperature allowed the absolute configurati...
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متن کاملEffects of frozen storage on fatty acids profile, chemical quality indices and sensory properties of Red Tilapia (Oreochromis niloticus × Tilapia mosambicus) fillets
The aim of the investigation was to determine the changes in fatty acids profile and chemical quality indexes of Red Tilapia fillets during frozen storage at -18°C. The fish were filleted by hand. The prepared fillets were then placed to the polyamide pouches and stored at -18°C for 150 days. Fatty acid profile, sensory properties and chemical quality indices were determined for a five month pe...
متن کاملSeasonal variations of ω3 polyunsaturated fatty acids in muscle of Capoeta caelestis
In this study, seasonal variations of fatty acid amounts in muscle tissues of Capoeta caelestis were investigated. We have found that the ω3 contents of C. caelestis in spring, summer, autumn and winter were 17.43%, 15.29%, 17.54%, 13.63% in female and 16.96%, 19.25%, 18.66%, 14.76% in male, respectively. The amounts of ω3 polyunsaturated fatty acids were higher than those of ω6 polyunsaturated...
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