Anti-Hyperglycemic Activity of Major Compounds from Calea ternifolia
AbstractDemethylisoencecalin (1) and caleins A (4) and C (5) (3.16–31.6 mg/kg, p.o.), the major components from an infusion of Calea ternifolia controlled postprandial glucose levels during an oral sucrose tolerance test (OSTT, 3 g/kg) in normal and nicotinamide/streptozotocin (NA/STZ, 40/100 mg/kg) hyperglicemic mice. The effects were comparable to those of acarbose (5 mg/kg). During the isolation of 1, 4, and 5, four additional metabolites not previously reported for the plant, were obtained, namely 6-acetyl-5-hydroxy-2-methyl-2-hydroxymethyl-2H-chromene (3), herniarin (6), scoparone (7), and 4′,7-dimethylapigenin (8). In addition, the structure of calein C (5) was confirmed by X-ray analysis. Pharmacological evaluation of the essential oil of the species (31.6–316.2 mg/kg, p.o.) provoked also an important decrement of blood glucose levels during an OSTT. Gas chromatography coupled with mass spectrometry (GC-MS) analysis of the headspace solid phase microextraction (HS-SPME)-adsorbed compounds and active essential oil obtained by hydrodistillation revealed that chromene 1 was the major component (19.92%); sesquiterpenes represented the highest percentage of the essential oil content (55.67%) and included curcumene (7.10%), spathulenol (12.95%) and caryophyllene oxide (13.0%). A suitable High Performance Liquid Chromatography (HPLC) method for quantifying chromenes 1 and 6-hydroxyacetyl-5-hydroxy-2,2-dimethyl-2H-chromene (2) was developed and validated according to standard protocols. View Full-Text
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Escandón-Rivera, S.; Pérez-Vásquez, A.; Navarrete, A.; Hernández, M.; Linares, E.; Bye, R.; Mata, R. Anti-Hyperglycemic Activity of Major Compounds from Calea ternifolia. Molecules 2017, 22, 289.
Escandón-Rivera S, Pérez-Vásquez A, Navarrete A, Hernández M, Linares E, Bye R, Mata R. Anti-Hyperglycemic Activity of Major Compounds from Calea ternifolia. Molecules. 2017; 22(2):289.Chicago/Turabian Style
Escandón-Rivera, Sonia; Pérez-Vásquez, Araceli; Navarrete, Andrés; Hernández, Mariana; Linares, Edelmira; Bye, Robert; Mata, Rachel. 2017. "Anti-Hyperglycemic Activity of Major Compounds from Calea ternifolia." Molecules 22, no. 2: 289.