RESUMO
A new dihydroflavone:mirabiflavone (1), together with two known compounds were isolated from the ethyl acetate extract of the roots of Mirabilis himalaica by using various chromatographic techniques, such as silica gel column, Sephadex LH-20 column, and semi-preparative HPLC. Their structures were elucidated as syringaresinol (2) and lariciresinol (3) by spectroscopic analysis. Compounds 2 and 3 were isolated from this plant for the first time.
RESUMO
A new isocoumarin, chamerilactone A (1) was isolated from the ethanol extract of Chamerion angustifolium with normal phase silica column chromatography, Sephadex LH-20, MCI CHP-20 and semipreparative HPLC methods. Its structure and stereochemistry were elucidated by spectroscopic methods, including 2D-NMR and optical rotation techniques.
RESUMO
A new dibenzocyclooctadiene lignan, renchangianin E (1) was isolated from the stems of Kadsura renchangiana. Its structure and stereochemistry were elucidated by spectroscopic methods, including 2D-NMR techniques.
Assuntos
Ciclo-Octanos , Química , Kadsura , Química , Lignanas , Química , Espectroscopia de Ressonância Magnética , Estrutura MolecularRESUMO
<p><b>OBJECTIVE</b>To explore the influence of compound whole grain complex antioxidant chain on oxidative stress to the hyperlipidemia population.</p><p><b>METHODS</b>From March 2008 to March 2009, 418 hyperlipemia residents (45 to 75 years of age) of Han group were screened from 3 main districts in Nanjing, according to the community, blood lipids and oxidative indicators, stratified into intervention and control group by quasi-experimental design. The intervention group (212 individuals) were provided with compound whole grain and health education while only health education was provided for the control group (206 individuals). Body mass index (BMI), waist-to-hip ratio (WHR), total cholesterol (TC), triglyceride (TG) and high density lipoprotein cholesterol (HDL-C) and oxidative indicators (including T-AOC, MDA, SOD, GSH-Px) were measured before and after the one-year intervention period. Analyses of the correlation between posture, biochemical markers and oxidative stress indicators before and after intervention were carried out.</p><p><b>RESULTS</b>After intervention, BMI ((25.53 ± 2.77) kg/m(2)), WHR (0.82 ± 0.03), TC ((4.60 ± 0.98) mmol/L), TG ((1.26 ± 0.88) mmol/L) in the intervention group were decreased significantly compared to the levels of BMI ((26.60 ± 3.18) kg/m(2)), WHR (0.93 ± 0.05), TC ((4.97 ± 1.02) mmol/L), TG ((1.98 ± 1.11) mmol/L) in the control group (all P values < 0.05); while HDL-C ((1.34 ± 0.26) mmol/L) in the intervention group was increased significantly compared to the level of HDL-C ((1.18 ± 0.17) mmol/L) in the control group (P < 0.05); After intervention, levels of T-AOC (19.52 ± 0.81), SOD ((85.42 ± 21.65) U/ml) and GSH-Px ((128.26 ± 33.65) µmol/L) were increased significantly compared to the levels of T-AOC (11.11 ± 1.30), SOD ((78.68 ± 30.48) U/ml) and GSH-Px ((118.48 ± 24.19) µmol/L) in the control group (all P values < 0.05); while MDA ((1.78 ± 1.16) nmol/ml) decreased significantly compared to the level of MDA ((2.12 ± 1.37) nmol/ml in the control group (P < 0.05); Pearson product moment correlation analysis showed that: T-AOC with TC, TG, BMI showed a negative correlation (r values were -0.258, -0.266, -0.230, respectively, all P values < 0.05), while with HDL-C was a positive correlation (r values was 0.194, P < 0.05); SOD with TC, TG, BMI showed a negative correlation (r values were -0.282, -0.311, -0.217, respectively, all P values < 0.05), while with HDL-C was a positive correlation (r values was 0.169, P < 0.05).</p><p><b>CONCLUSION</b>Compound whole grain could improve lipid metabolism to the hyperlipidemia population. There was a correlation between common human metabolism and the levels of oxidative stress.</p>