Academic literature on the topic 'Dimethoxycinnamic acid'

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Journal articles on the topic "Dimethoxycinnamic acid"

1

Rudyanto, Marcellino, and Lanny Hartanti. "SYNTHESIS OF SOME CINNAMIC ACID DERIVATIVES: EFFECT OF GROUPS ATTACHED ON AROMATIC RING TO THE REACTIVITY OF BENZALDEHYDE." Indonesian Journal of Chemistry 8, no. 2 (2010): 226–30. http://dx.doi.org/10.22146/ijc.21626.

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Synthesis of cinnamic acid and its six derivatives has been done by employing Knoevenagel reaction. Benzaldehyde, 4-butylbenzaldehyde, 4-t-butylbenzaldehyde, 4-butoxybenzaldehyde, 4-phenylbenzaldehyde, 5-bromo-2,4-dimethoxybenzaldehyde, and 5-bromo-2,3-dimethoxybenzaldehyde were reacted with malonic acid in pyridine – piperidine to give cinnamic acid (85,3%), 4-butylcinnamic acid (69,3%), 4-t-butylcinnamic acid (77,7%), 4-butoxycinnamic acid (64,5%), 4-phenylcinnamic acid (65,5%), 5-bromo-2,4-dimethoxycinnamic acid (53,2%) and 5-bromo-2,4-dimethoxycinnamic acid (57,2%), respectively. It was di
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2

Zheng, Ruirui, Jinyu Zhao, Li Ma, Xingtao Qie, Xizhong Yan, and Chi Hao. "Behavioral, Electrophysiological, and Toxicological Responses of Plutella xylostella to Extracts from Angelica pubescens." Insects 14, no. 7 (2023): 613. http://dx.doi.org/10.3390/insects14070613.

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Plutella xylostella L. is a destructive pest affecting cruciferous vegetables, causing massive economic losses worldwide. Plant−based insecticides are considered promising insect control agents. The Angelica pubescens extract inhibited female oviposition, with an oviposition deterrence index (ODI) of 61.65% at 12.5 mg/mL. We aimed to identify the bioactive compounds in A. pubescens extract. The compounds from A. pubescens extract were analyzed using LC−MS techniques. The toxicity and behavioral responses of larvae and adults of P. xylostella to ten compounds were investigated. We found that th
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3

Zanyatkin, Ivan, Yulia Stroylova, Sofia Tishina, et al. "Inhibition of Prion Propagation by 3,4-Dimethoxycinnamic Acid." Phytotherapy Research 31, no. 7 (2017): 1046–55. http://dx.doi.org/10.1002/ptr.5824.

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4

O'CONNELL, JOHN E., and PATRICK F. FOX. "Effects of phenolic compounds on the heat stability of milk and concentrated milk." Journal of Dairy Research 66, no. 3 (1999): 399–407. http://dx.doi.org/10.1017/s0022029999003593.

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A methanol extract of green tea was fractionated on Sephadex LH-20. The compounds eluted were identified by thin layer chromatography as catechin–epicatechin, gallocatechin, epigallocatechin, epicatechin gallate and epigallocatechin gallate. When added to milk at 2·0 g/l, these polyphenols, apart from the catechin–epicatechin mixture, increased the heat stability of skim milk, particularly in the region of the minimum (pH 6·8–7·1). When added at 0·4 g/l, green tea polyphenols also increased the heat stability of concentrated milk. The effects of other phenolic compounds on the heat stability o
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5

Chen, Chung-Yi, Yu-Ting Yeh, and Woei-Ling Yang. "Amides from the Stem of Capsicum annuum." Natural Product Communications 6, no. 2 (2011): 1934578X1100600. http://dx.doi.org/10.1177/1934578x1100600217.

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7′-(4′-hydroxyphenyl)- N-[(4-methoxyphenyl)ethyl]propenamide (1), 7′-(3′,4′-dihydroxyphenyl)- N-[(4-methoxyphenyl)ethyl]propenamide (2), N-p-trans-coumaroyltyramine (3), N-trans-caffeoyltyramine (4), β-sitostenone (5), ferulic acid (6), hydroferulic acid (7), 5-hydroxy-3,4-dimethoxycinnamic acid (8), veratic acid (9), vanillic acid (10), isovanillic acid (11), syringic acid (12), (+)-syringaresinol (13), and pheophorbide a (14) were isolated from the stems of Capsicum annuum (Solanaceae). Among them, 1 is a new amide compound. The structures of these compounds were characterized and identified
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6

Medvedeva, Maria, Natalia Kitsilovskaya, Yulia Stroylova, Irina Sevostyanova, Ali Akbar Saboury, and Vladimir Muronetz. "Hydroxycinnamic Acid Derivatives from Coffee Extracts Prevent Amyloid Transformation of Alpha-Synuclein." Biomedicines 10, no. 9 (2022): 2255. http://dx.doi.org/10.3390/biomedicines10092255.

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Earlier we showed that derivatives of hydroxycinnamic acids prevent amyloid transformation of alpha-synuclein and prion protein. The aim of this work was to determine the content of 3-hydroxycinnamic acid derivatives in coffee extracts and to evaluate their activity in relation to alpha-synuclein amyloid aggregation. Hydroxycinnamic acid derivatives were identified in aqueous and ethanol extracts of coffee beans by quantitative mass spectrometric analysis. Only 3,4-dimethoxycinnamic acid (13–53 μg/mL) was detected in significant amounts in the coffee extracts, while ferulic acid was present in
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7

Peterson, John R., Hoang D. Do, and Andrew J. Dunham. "Cerium(IV)-induced nitration of cinnamic acids. Novel remote electrophilic substitution." Canadian Journal of Chemistry 66, no. 7 (1988): 1670–74. http://dx.doi.org/10.1139/v88-271.

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The treatment of (E)-3,4-dimethoxycinnamic acid with ceric ammonium nitrate in trifluoroacetic acid afforded (E)-1,2-dimethoxy-4-nitro-5-(2-nitroethenyl)benzene in 79% yield. The unusual ipso substitution of the carboxylic acid moiety by a nitro functional center illustrated a new reaction manifold of cerium(IV). Six cinnamic acids were examined to ascertain the generality of the transformation. The bidentate nitrato structure of the metal salt is believed to account for the nitrating ability of this system.
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8

Sethuraman, Anand, Danny E. Akin, Jason G. Eisele, and Karl-Erik L. Eriksson. "Effect of aromatic compounds on growth and ligninolytic enzyme production of two white rot fungi Ceriporiopsis subvermispora and Cyathus stercoreus." Canadian Journal of Microbiology 44, no. 9 (1998): 872–85. http://dx.doi.org/10.1139/w98-077.

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Seven benzoic acid, ten cinnamic acid, and five benzaldehyde derivatives were tested for their effects on hyphal growth and production of laccase and manganese peroxidase by Ceriporiopsis subvermispora FP 90031-sp and Cyathus stercoreus ATCC 36910. Derivatives tested included phenolic compounds and their corresponding unsubstituted and O-methylated derivatives. Benzaldehyde derivatives were more toxic to both fungi than the corresponding benzoic and cinnamic acid derivatives. Hyphal growth was generally increased at a low concentration of 1 mM, while higher concentrations of 5-10 mM mostly res
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9

AVIJIT, BANERJl, JANA SUKLA, and RANABIR SUR KUMAR. "Reaction of Cinnamic Acid Derivatives with Sodium Naphthalenide, A Single-electron Transfer Reagent." Journal Of Indian Chemical Society Vol. 66, Aug-Oct 1989 (1989): 664–72. https://doi.org/10.5281/zenodo.6023992.

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Centre of Advanced Studies on Natural Products, Department of Chemistry University of Calcutta 92&nbsp;Acharya Prafulla Chandra Road, Calcutta- 700&nbsp;009 The reactions of the piperidides of cinnamic acid, <em>p</em>-methoxycinnamic acid and 3,4-dimethoxycinnamic acid with the single-electron transfer reagent sodium naphthalenide was investigated. Three products were obtained in each case-the corresponding dihydro- erivative and two diastereoisomeric piperidides of 3,4-diaryl- 1,6-hexanedioic acid resulting from reductive dimerisation. The <em>&szlig;,&szlig;&#39;</em>- rather than&nbsp; \(\
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10

Theodosis-Nobelos, Panagiotis, Georgios Papagiouvannis, and Eleni A. Rekka. "Ferulic, Sinapic, 3,4-Dimethoxycinnamic Acid and Indomethacin Derivatives with Antioxidant, Anti-Inflammatory and Hypolipidemic Functionality." Antioxidants 12, no. 7 (2023): 1436. http://dx.doi.org/10.3390/antiox12071436.

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A series of thiomorpholine and cinnamyl alcohol derivatives, conjugated with cinnamic acid-containing moieties, such as ferulic acid, sinapic acid and 3,4-dimethoxycinnamic acid, were synthesized and tested for their antioxidant, anti-inflammatory and hypolipidemic properties. An indomethacin ester with 2,6-di-tert-butyl-4-(hydroxymethyl)phenol was also prepared for reasons of comparison. The majority of the compounds demonstrated considerable antioxidant capacity and radical scavenging activity, reaching up to levels similar to the well-known antioxidant trolox. Some of them had an increased
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