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Showing 1 to 12 of 172 entries
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Regioselective para-Carboxylation of Catechols with a Prenylated Flavin Dependent Decarboxylase.

Angewandte Chemie (International ed. in English)

Payer SE, Marshall SA, Bärland N, Sheng X, Reiter T, Dordic A, Steinkellner G, Wuensch C, Kaltwasser S, Fisher K, Rigby SEJ, Macheroux P, Vonck J, Gruber K, Faber K, Himo F, Leys D, Pavkov-Keller T, Glueck SM.
PMID: 28857436
Angew Chem Int Ed Engl. 2017 Oct 23;56(44):13893-13897. doi: 10.1002/anie.201708091. Epub 2017 Oct 02.

The utilization of CO

Adsorption mechanism and valency of catechol-functionalized hyperbranched polyglycerols.

Beilstein journal of organic chemistry

Krysiak S, Wei Q, Rischka K, Hartwig A, Haag R, Hugel T.
PMID: 26150898
Beilstein J Org Chem. 2015 May 18;11:828-36. doi: 10.3762/bjoc.11.92. eCollection 2015.

Nature often serves as a model system for developing new adhesives. In aqueous environments, mussel-inspired adhesives are promising candidates. Understanding the mechanism of the extraordinarily strong adhesive bonds of the catechol group will likely aid in the development of...

Resolving Non-Specific and Specific Adhesive Interactions of Catechols at Solid/Liquid Interfaces at the Molecular Scale.

Angewandte Chemie (International ed. in English)

Utzig T, Stock P, Valtiner M.
PMID: 27374053
Angew Chem Int Ed Engl. 2016 Aug 08;55(33):9524-8. doi: 10.1002/anie.201601881. Epub 2016 Jul 04.

The adhesive system of mussels evolved into a powerful and adaptive system with affinity to a wide range of surfaces. It is widely known that thereby 3,4-dihydroxyphenylalanine (Dopa) plays a central role. However underlying binding energies remain unknown at...

Ningalins A-D: Novel Aromatic Alkaloids from a Western Australian Ascidian of the Genus Didemnum.

The Journal of organic chemistry

Kang H, Fenical W.
PMID: 11671712
J Org Chem. 1997 May 16;62(10):3254-3262. doi: 10.1021/jo962132+.

Four aromatic alkaloids, ningalins A-D (1-4), three of which possess new carbon skeletons, were isolated from an undescribed ascidian of the genus Didemnumcollected in Western Australia near Ningaloo Reef. The structures of these new alkaloids were elucidated by interpretation...

Biotransformation of chloroaromatics: the impact of bioavailability and substrate specificity.

Bioinorganic chemistry and applications

Randazzo D, Ferraroni M, Scozzafava A, Golovleva L, Briganti F.
PMID: 18365077
Bioinorg Chem Appl. 2004;209-23. doi: 10.1155/S1565363304000135.

The effect of surfactants on the biodegradation of mono-aromatic hydrocarbons such as benzene, chlorobenzene and 1,2-dichlorobenzene by an Escherichia coli JMI09(MI) recombinant strain, carrying a gene cluster containing the genes for benzene dioxygenase, cis-benzene dihydrodiol dehydrogenase, and catechol 2,3-dioxygenase...

Acetates and benzoates of alkyl catechols and evaluation of their antibacterial activity.

Pakistan journal of pharmaceutical sciences

Siddiqui BS, Begum S, Adil Q, Akber M, Firdous S, Khan KA, Khan SA, Khalid SM.
PMID: 16414796
Pak J Pharm Sci. 1997 Jul;10(2):1-12.

Potential biologically active alkyl catechol esters were prepared and their antibacterial activity was determined against 12 Gram-positive and 16 Gram-negative bacteria. Esterification (acetylation and benzoylation) of mono-, di- and tetra- substituted alkyl catechols afforded the di-acetyl and di-benzoyl derivatives...

Metabolic engineering of Pseudomonas putida for the simultaneous biodegradation of benzene, toluene, and p-xylene mixture.

Biotechnology and bioengineering

Lee JY, Roh JR, Kim HS.
PMID: 18615528
Biotechnol Bioeng. 1994 May;43(11):1146-52. doi: 10.1002/bit.260431120.

For the complete biodegradation of a mixture of benzene, toluene, and p-xylene (BTX), a critical metabolic step that can connect two existing metabolic pathways of aromatic compounds (the tod and the tol pathways) was determined. Toluate-cis-glycol dehydrogenase in the...

THE COMBINATION OF DIVALENT MANGANESE WITH CERTAIN PROTEINS, AMINO ACIDS, AND RELATED COMPOUNDS.

The Journal of general physiology

Main RK, Schmidt CL.
PMID: 19872906
J Gen Physiol. 1935 Sep 20;19(1):127-47. doi: 10.1085/jgp.19.1.127.

1. A study of the mode of combination which takes place between certain amino acids, proteins, various carboxylic acids, and certain sulfonic acids and manganous ions to form complexes is reported. 2. Three criteria for complex formation were used:...

Halogenated catechols from cycloaddition reactions of η-(2-ethoxyvinylketene)iron(0) complexes with 1-haloalkynes.

Tetrahedron letters

Truong J, Caze V, Akhani RK, Joshi GK, Kakalis L, Matsunaga N, Schnatter WF.
PMID: 20161603
Tetrahedron Lett. 2010 Feb 10;51(6):921-923. doi: 10.1016/j.tetlet.2009.12.029.

1-chloroalkynes and 1-bromohexyne undergo cycloaddition reactions with ethoxyvinylketeneiron(0) complexes to form chloro and bromocatechols. With most substituents, the halogen is incorporated ortho to the phenolic hydroxyl group regioselectively. With chloroethyne, chlorohexyne, and methyl chloropropiolate, the reverse regioselection is observed....

Further Electrochemical and Behavioural Evidence of a Direct Relationship Between Central 5-HT and Cytoskeleton in the Control of Mood.

The open neurology journal

Crespi F.
PMID: 20802812
Open Neurol J. 2010 May 21;4:5-14. doi: 10.2174/1874205X01004010005.

Reduced activity of CNS serotonin is reported in unipolar depression and serotonin is the major target of recent antidepressant drugs. However, an acute depletion of serotonin in healthy individuals does not induce depressive symptoms suggesting that depression does not...

Urushiol-induced contact dermatitis caused during Shodhana (purificatory measures) of Bhallataka (Semecarpus anacardium Linn.) fruit.

Ayu

Llanchezhian R, Joseph C R, Rabinarayan A.
PMID: 23559802
Ayu. 2012 Apr;33(2):270-3. doi: 10.4103/0974-8520.105250.

Bhallataka (Semecarpus anacardium Linn.; Ancardiaceae) is mentioned under Upavisha group in Ayurvedic classics and it is described as a poisonous medicinal plant in Drugs and Cosmetics Act (India), 1940. Fruit of Bhallataka is used either as a single drug...

Mussel-inspired pH-triggered reversible foamed multi-responsive gel--the surprising effect of water.

Chemical communications (Cambridge, England)

Vatankhah-Varnoosfaderani M, Ghavaminejad A, Hashmi S, Stadler FJ.
PMID: 23583983
Chem Commun (Camb). 2013 May 21;49(41):4685-7. doi: 10.1039/c3cc41332b. Epub 2013 Apr 15.

Novel covalent gels were prepared by complexation of polymer-bound catechols with NaBH4 at pH ≈ 9. These gels can absorb humidity, which changes the catechol-borate covalent bonds from irreversible to reversible. Furthermore, humidity induces self-healing, proven by rheological data.

Showing 1 to 12 of 172 entries