Synthesis from catechol requires an additional step, Williamson ether synthesis using dichloromethane. Piperonal, like all ... Piperonal can be prepared by oxidizing isosafrole or by using a multistep sequence from catechol or 1,2-methylenedioxybenzene. ... doi:10.1016/S0040-4039(00)88578-0. Bonthrone, W. & Cornforth, J. (1969). "The methylenation of catechols". Journal of the ...
doi:10.2174/1389200003339270 Bonthrone, W. & Cornforth, J. (1969). "The methylenation of catechols". Journal of the Chemical ... 1,3-Benzodioxole can be synthesized from catechol with disubstituted halomethanes. 1,4-Benzodioxine Methylenedioxy Safrole ...
Catechol, for example, is synthesized from o-hydroxy and o-alkoxy phenyl aldehydes and ketones, and is used as the starting ... Dakin, H.D. (1923). "Catechol". Organic Syntheses. 3: 28. doi:10.15227/orgsyn.003.0028. Surrey, Alexander R. (1946). " ...
Dakin, H. D. (1923). "Catechol" (PDF). Organic Syntheses. 3: 28. ; Collective Volume, 1, p. 149 Burgstahler, A. W.; Worden, L. ... Salicylaldehyde is used to make the following: Oxidation with hydrogen peroxide gives catechol (1,2-dihydroxybenzene) (Dakin ...
In the case the catecholamines, however, the enzymes of degradation monoamine oxidase and catechol-O-methyl transferase, like ... In this respect, ″amino-ethanol-catechol″ - noradrenaline - mimicked sympathetic nerves more closely than adrenaline did. The ... Julius Axelrod (1962). "O-Methylation of epinephrine and other catechols". Science. 126 (3270): 400-401. doi:10.1126/science. ... noradrenaline and adrenaline were O-methylated by catechol-O-methyl transferase. To fill the gap completely, however, the role ...
Catechol-O-methyltransferase (COMT) degrades a class of molecules known as catcholamines that includes dopamine, epinephrine, ... "COMT catechol-O-methyltransferase". NCBI Genetic Testing Registry. Retrieved 18 February 2014. Ragsdale, S.W. "Catalysis of ... Examples include: Catechol-O-methyl transferase DNA methyltransferase Histone methyltransferase 5-Methyltetrahydrofolate- ...
... catechol oxidases). A mixture of monophenol oxidase and catechol oxidase enzymes is present in nearly all plant tissues, and ... catechol oxidase "Polyphenol Oxidase". Worthington Enzyme Manual. Retrieved 13 September 2011. Mayer, AM (November 2006). " ...
... allowing siderocalin to bind to the iron-catechol complex. Catechols can be bound by siderocalin, in the form of free ligands, ... Mammalian siderophores, specifically catechols, can be found in the human gut and in siderophores, such as enterobactin, and ... Catechol resembling molecules can act as iron ligands in the cell and in systematic circulation, ... Rogers HJ (Mar 1973). "Iron-Binding Catechols and Virulence in Escherichia coli". Infection and Immunity. 7 (3): 445-56. PMC ...
... the catechol-type siderophores, agrobactin; and the mixed ligand catechol-hydroxamate-hydroxy acid siderophores biosynthesized ...
Catechol-O-methyl transferase (COMT). A large number of natural products in plants, e.g. lignins, are generated via catalysis ...
Kobayashi S, Hayaishi O (1970). "Anthranilic acid conversion to catechol (Pseudomonas)". Methods Enzymol. 17A: 505-510. doi: ... catechol + CO2 + NAD(P)+ + NH3 The 5 substrates of this enzyme are anthranilate, NADH, NADPH, H+, and O2, whereas its 5 ... "Enzymatic formation of catechol from anthranilic acid". J. Biol. Chem. 239: 2204-2211. PMID 14209949. Molecular and Cellular ... products are catechol, CO2, NAD+, NADP+, and NH3. This enzyme belongs to the family of oxidoreductases, specifically those ...
3. Enzymes of the catechol pathway". J. Biol. Chem. 241: 3795-3799. PMID 5330966. Ornston, L.N. (1970). "Conversion of catechol ... Ornston, L.N. (1966). "The conversion of catechol and protocatechuate to β-ketoadipate by Pseudomonas putida. ... catechol and protocatechuate, to citric acid cycle intermediates as a part of the β-ketoadipate pathway in soil microbes. Some ...
... is a major metabolite of L-3,4-dihydroxyphenylalanin (L-DOPA) and is formed by catechol O-methyltransferase ( ... This process is catalyzed by catechol O-methyltransferase methylates (COMT). The action of the enzyme makes it possible the ... Tai, C. H.; Wu, R. M. (2002). "Catechol-O-methyltransferase and Parkinson's disease". Acta medica Okayama. 56 (1): 1-6. PMID ... L-DOPA Entacapone Tolcapone Catechol-O-methyl transferase Parkinson's disease Parkinson's Disease and movement disorders. ...
3. Enzymes of the catechol pathway". J. Biol. Chem. 241 (16): 3795-9. PMID 5330966. Ornston LN (1970). "Conversion of catechol ... Ornston LN (1966). "The conversion of catechol and protocatechuate to beta-ketoadipate by Pseudomonas putida. ...
I Enzymatic formation of catechol from benzene". Biochemistry. 7 (7): 2653-62. doi:10.1021/bi00847a031. PMID 4298226. Molecular ... catechol + NADH + H+ Thus, the two substrates of this enzyme are cis-1,2-dihydrobenzene-1,2-diol and NAD+, whereas its 3 ... products are catechol, NADH, and H+. This enzyme belongs to the family of oxidoreductases, specifically those acting on the CH- ...
... s are much broader than the oligomers of ethylene oxide; an important group are derived from catechol. Crown ethers ...
... see catechol), and myrobalans from Terminalia spp., such as Terminalia chebula. Hides are stretched on frames and immersed for ...
Allyl cyanide is starting material, and catechol. Idazoxan Piperoxan David J. Triggle (1997). Dictionary of pharmacological ...
I Enzymatic formation of catechol from benzene". Biochemistry. 7 (7): 2653-62. doi:10.1021/bi00847a031. PMID 4298226. Molecular ...
... is produced by methylation of catechol; e.g., using potash and dimethyl sulfate: C6H4(OH)2 + (CH3O)2SO2 → C6H4(OH)( ... Guaiacol can be synthesized by the dimethylation of catechol followed by selective mono-demethylation. C6H4(OCH3)2 + C2H5SNa → ...
M. L. Tainter (1930). "Comparative actions of sympathomimetic compounds: catechol derivatives." J. Pharmacol. Exp. Ther. 40 43- ... "methylamino-ethyl-catechol", as they called it, had about 1/7 x the pressor potency of epinephrine, but about 5 x the potency ... "methylamino-ethyl-catechol", under the name "epinine", as a substitute for epinephrine. Tainter further quantified the pressor ... of dopamine ("amino-ethyl-catechol") in cat preparations. The Buroughs Wellcome Co., for which Barger, Dale and Pyman (see " ...
Michnovicz JJ, Galbraith RA (February 1991). "Cimetidine inhibits catechol estrogen metabolism in women". Metabolism. 40 (2): ...
Kupchan demonstrated that taxodone aromatizes to a catechol ketone upon exposure to mild acid. Air oxidation of this catechol ... "Syntheses and antibacterial activities of diterpene catechol derivatives with abietane, totarane and podocarpane skeletons ...
... is not metabolized by catechol-O-methyltransferase. The plasma half-life measured after oral administration is about ...
Catechol borane is less reactive than borane itself. When catecholborane is treated with an alkyne, usually a terminal alkyne, ... Unlike borane itself or alkylboranes, catechol borane exists as a monomer. This behavior is a consequence of the electronic ... This colourless liquid is a derivative of catechol and a borane, having the formula C6H4O2BH. Traditionally catecholborane is ... produced by treating catechol with borane (BH3) in a cooled solution of THF. However, this method results in a loss of 2 mole ...