Results 231 to 240 of about 6,174 (259)
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Cinnamate and cinnamate derivatives in plants
Acta Physiologiae Plantarum, 2016Cinnamic acid, an ubiquitous alpha beta unsaturated acid, upon hydroxylation yields p-hydroxy cinnamic acid or p-coumarate, a plant mono phenol. Being, precursor for the production of various di (lignans), polyphenols (lignins) and also substituted derivatives, it seems to be an important aromatic chemical in growth and development of plants.
K. K. Koul, Razia Shuab, Rafiq Lone
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Synthesis of benzyl cinnamate by enzymatic esterification of cinnamic acid
Bioresource Technology, 2015In this study, lipase catalysis was successfully applied in synthesis of benzyl cinnamate through esterification of cinnamic acid with benzyl alcohol. Lipozyme TLIM was found to be more efficient for catalyzing this reaction than Novozym 435. In order to increase the yield of benzyl cinnamate, several media, including acetone, trichloromethane ...
Dong-Hao Zhang +3 more
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Photophysical characterization of cinnamates
Photochemical & Photobiological Sciences, 2009The photophysical properties of five methoxy-substituted 2-ethylhexylcinnamates were studied with experimental and theoretical methods. It was found that the fluorescence quantum yields varied strongly with the substitution pattern of the phenyl ring.
Supason Wanichweacharungruang +2 more
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Non-natural cinnamic acid derivatives as substrates of cinnamate 4-hydroxylase
Phytochemistry, 2007Cinnamate 4-hydroxylase (C4H), a monooxygenase in the plant phenylpropanoid pathway, was assayed for its ability to hydroxylate 29 substrate analogues. Nine of the tested analogues with various aromatic side chains, including 3-coumaric acid, were metabolized by C4H.
John A. Morgan, Hanxiao Jiang, Hao Chen
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The absorption and metabolism of methyl cinnamate
Toxicology, 1977Analysis of the gut contents of rats killed at intervals after dosage with methyl cinnamate or cinnamic acid suggested that both ester and acid were rapidly absorbed; at no time was more than 5% of the dose detected in the lower part of the gut. Not more than 9% of the administered methyl cinnamate was detected in the stomach as cinnamic acid whereas ...
Sybil P. James, I.M.S. Fahelbum
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Decarboxylative functionalization of cinnamic acids
Organic & Biomolecular Chemistry, 2015Decarboxylative functionalization of α,β-unsaturated carboxylic acids is an emerging area that has been developed significantly in recent years.
Arun Jyoti Borah, Guobing Yan
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Contact Dermatitis, 1975
Positive patch test reactions to 2 % cinnamic aldehyde were obtained from 2.8 % of 34 males and 9.1 % of 55 females. The 9.1 % female reactivity may be traceable to perfumed cosmetics. Simultaneous Jasmin allergy is documented us is the occurrence of alpha‐amyl cinnamic aldehyde in synthetic, Jasmin. The relevance of these reactions is discussed.
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Positive patch test reactions to 2 % cinnamic aldehyde were obtained from 2.8 % of 34 males and 9.1 % of 55 females. The 9.1 % female reactivity may be traceable to perfumed cosmetics. Simultaneous Jasmin allergy is documented us is the occurrence of alpha‐amyl cinnamic aldehyde in synthetic, Jasmin. The relevance of these reactions is discussed.
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Toxicology and Applied Pharmacology, 2000
trans-Cinnamaldehyde and trans-cinnamic alcohol have been commonly reported to cause allergic contact dermatitis (ACD) in humans. Cinnamaldehyde is a more potent skin sensitizer than cinnamic alcohol. It has been hypothesized that cinnamic alcohol is a "prohapten" that requires metabolic activation, presumably by oxidoreductase enzymes such as alcohol ...
Sharon A.M. Hotchkiss +4 more
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trans-Cinnamaldehyde and trans-cinnamic alcohol have been commonly reported to cause allergic contact dermatitis (ACD) in humans. Cinnamaldehyde is a more potent skin sensitizer than cinnamic alcohol. It has been hypothesized that cinnamic alcohol is a "prohapten" that requires metabolic activation, presumably by oxidoreductase enzymes such as alcohol ...
Sharon A.M. Hotchkiss +4 more
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THE MICROBIAL METABOLISM OF CINNAMIC ACID
Canadian Journal of Microbiology, 1964A strain of Pseudomanas isolated from soil with cinnamic acid as a sole carbon source was found to be simultaneously adapted to the utilization of cinnamic acid and phenylpropionic acid. During growth on either of these compounds, o-hydroxyphenylpropionic acid and 2,3-dihydroxyphenylpropionic acid were produced in the culture medium. The organism, when
F. J. Simpson, E. R. Blakley
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