Abstract 1,2,4‐Trisubstituted 1,3‐butadienes were prepared in a stereocontrolled manner by carbenoid eliminative cross‐coupling between stereodefined lithiated secondary allylic carbamates and α‐carbamoyloxyalkyl boronates. All four geometric isomers of 4,7‐dimethyl‐1‐phenylocta‐3,5‐diene stereospecifically generated [yields 44–73 %, dr (Δ 3,4 )=84 : 16 to 97 3] appropriate combinations (S,E)‐ ...

Emanuelsson, R. 2014. Conjugation in Organic Group 14 Element Compounds. Design, Synthesis and Experimental Evaluation. Digital Comprehensive Summaries of Uppsala Dissertations from the Faculty of Science and Technology 1140. 70 pp. Uppsala: Acta Universitatis Upsaliensis. ISBN 978-91-554-8929-8. This thesis focuses on the chemical concept of conjugation, i.e., electron delocalization, and the ...

Catechins in green tea have been shown to reduce a risk of coronary heart disease in epidemiological studies. Also, it has been reported catechins have hypolipidemic and antioxidant effects. Then, we investigated the effects of ground green tea drinking on the susceptibility of plasma and low-density lipoprotein (LDL) to the oxidation by CuSO4 ex vivo, and also evaluated daily food consumption ...

Oxygen free radicals have been implicated as mediators of tissue damage in patients with rheumatoid arthritis. The aim of our study was to assess the lipid peroxide products and antioxidant status in rheumatoid arthritis patients (RA). The study involved determination of two plasma lipid peroxide products, malondialdehyde (MDA) and conjugated dienes (CD), two plasma antioxidant vitamins (C and ...

We measured effects of continuous vs twice-daily feeding, the addition of unsaturated fat to the diet, and monensin on milk production, milk composition, feed intake, and CO2-methane production in four experiments in a herd of 88 to 109 milking Holsteins. Methane and CO2 production increased with twice-daily feeding, but the CO2:CH4 ratio remained unchanged. Soybean oil did not affect the milkf...

The challenge in the development of infant formulas enriched with polyunsaturated fatty acids (PUFAs) is to meet the consumers' expectations with regard to high nutritional and sensory value. In particular, PUFAs may be prone to fatty acid oxidation that can generate potential rancid, metallic and/or fishy off-flavors. Although such off-flavors pose no health risk, they can nevertheless lead to...

BACKGROUND Oxidized low-density lipoprotein (oxLDL) promotes apoptosis in atherosclerotic plaques in the vascular wall, a process mediated through its oxidized lipids. 4-Hydroxynonenal (HNE) and 4-hydroxyhexenal (HHE), derived from oxidation of n-6 and n-3 fatty acids, respectively, are among the major oxidized products in oxLDL. HYPOTHESIS This study hypothesized that eicosapentaenoic acid/d...

Flavonoids are ingested with vegetables and beverages and exert a beneficial effect on cardiovascular disease. Studies in animals in vitro and in humans ex vivo on the resistance of lipoproteins to oxidation are not consistent and the mechanisms by which flavonoids protect against atherosclerosis are a matter of debate. In the present study, we investigated the effects of administering diets co...

OBJECTIVE To examine the dynamics of oxidative stress in patients with hyperthyroidism before and during the treatment with methimazole using the measurement of conjugated dienes, malondialdehyde, and Schiff bases in blood serum. METHODS In eight female patients with diagnosed Graves disease and 8 healthy control subjects (7 females and one male) several parameters of oxidative stress (the le...