Results 201 to 210 of about 49,700 (250)

THE MICROBIAL METABOLISM OF CINNAMIC ACID

Canadian Journal of Microbiology, 1964
A 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
E R, BLAKLEY, F J, SIMPSON
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Enzymatic Synthesis of Cinnamic Acid Derivatives

Biotechnology Letters, 2006
Using Novozym 435 as catalyst, the syntheses of ethyl ferulate (EF) from ferulic acid (4-hydroxy 3-methoxy cinnamic acid) and ethanol, and octyl methoxycinnamate (OMC) from p-methoxycinnamic acid and 2-ethyl hexanol were successfully carried out in this study. A conversion of 87% was obtained within 2 days at 75 degrees C for the synthesis of EF.
Lee, G.-S., Widjaja, A., Ju, Y.-H.
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Non-natural cinnamic acid derivatives as substrates of cinnamate 4-hydroxylase

Phytochemistry, 2007
Cinnamate 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.
Hao, Chen, Hanxiao, Jiang, John A, Morgan   +2 more
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Lipase catalyzed reaction of L-ascorbic acid with cinnamic acid esters and substituted cinnamic acids

Biotechnology and Bioprocess Engineering, 2012
To perform the lipase-catalyzed synthesis of L-ascorbic acid derivatives from plant-based compounds such as cinnamic and ferulic acid under mild reaction conditions, the activities of immobilized Candida ntarctica lipase with different cinnamic acid esters and substituted cinnamic acids were compared. As a result, immobilized C.
Yung-Hun Yang, Takao Raku, Eunjung Song, Sung-Hee Park, Dongwon Yoo, Hyung-Yeon Park, Byung-Gee Kim, Hyung-Ju Kim, Sang-Hyun Lee, Hyung-Sup Kim, Yutaka Tokiwa   +10 more
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A comparative vibrational and NMR study of cis-cinnamic acid polymorphs and trans-cinnamic acid

Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy, 2001
The IR and Raman spectra of the two polymorphic forms (58 degree- and 68 degree-forms) of cis-cinnamic acid were measured, and the spectral differences discussed on the basis of the crystal structures of the two forms. The IR bands related to the COOH group differ in the frequencies and band shape, reflecting differences in the hydrogen bonding between
K, Hanai, A, Kuwae, T, Takai, H, Senda, K K, Kunimoto   +4 more
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(η2-Cinnamic)tetracarbonyliron acids. synthesis and acidity

Journal of Organometallic Chemistry, 1977
Abstract (η2-cinnamic)tetracarbonyliron acids [(η2-XC6H4CHCHCOOH) Fe(CO)4] (X = H, 3-OMe, 4-OMe, 4-Me, 3-Cl, 4-CI) have been prepared and their PKa's measured spectrophotometrically. The measured acidities indicate that the [Fe(CO)4] group is electron releasing.
G. Reichenbach, G. Cardaci, G.G. Aloisi
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Synthesis ofα-aryloxy cinnamic acids

Proceedings of the Indian Academy of Sciences - Section A, 1975
The Perkin-Oglialoro reaction was used for the synthesis of α-aryloxycinnamic acids, but the yields were very low. The potassium tertiary butoxide catalysed condensation of aryloxyacetic ester and aldehydes leads to the formation ofα-aryloxycinnamic acids and its corresponding ester, in good yields through an “oxocyclic intermediate pathway”.
G. Bagavant, M. K. Gurjar, B. H. Patwardhan   +2 more
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Treatment of cinnamic acids with polyphosphoric acid

Journal of the Chemical Society, Chemical Communications, 1978
Polyphosphoric acid has been found to isomerize cis-p-methoxycinnamic acid to trans-p-methoxycinnamic acid and to cleave a benzyl ether; however, there is no evidence for the previously reported trans- to cis-isomerization of cinnamic acids.
James Quick, Clifford Meltz
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Cinnamic acid hydroxylase in spinach

Phytochemistry, 1965
Abstract An acetone precipitate from an extract of spinach leaves catalysed the hydroxylation of trans-cinnamic acid to p-coumaric acid. The enzyme was unstable and could not be purified. Crude preparations had a pH optimum of 4–6 and showed an absolute requirement for an external electron donor. Tetrahydrofolic acid and a reduced pyridine nucleotide
P.M. Nair, L.C. Vining
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A cinnamic acid-type photo-cleavable surfactant

Journal of Colloid and Interface Science, 2012
We have developed a novel cinnamic acid-type photo-cleavable surfactant. This surfactant experiences photo-cleavage through UV-induced cyclization in aqueous solutions. The photo-cleavage not only reduces its capabilities as a surfactant but also yields two functional materials including a coumarin derivative and an aminated polyoxyethylene compound ...
Hideki, Sakai, Shohei, Aikawa, Wataru, Matsuda, Takashi, Ohmori, Yuko, Fukukita, Yoji, Tezuka, Atsutoshi, Matsumura, Kanjiro, Torigoe, Koji, Tsuchiya, Koji, Arimitsu, Kazutami, Sakamoto, Kenichi, Sakai, Masahiko, Abe   +12 more
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