3167-49-5Relevant academic research and scientific papers
Electrocatalytic carboxylation of 2-amino-5-bromopyridine with CO 2 in ionic liquid 1-butyl-3-methyllimidazoliumtetrafluoborate to 6-aminonicotinic acid
Feng, Qiuju,Huang, Kelong,Liu, Suqin,Wang, Xuanyun
, p. 5741 - 5745 (2010)
A new electrochemical procedure for the electrocatalytic carboxylation of 2-amino-5-bromopyridine with CO2 in ionic liquid, 1-butyl-3-methyllimidazolium tetrafluoborate (BMIMBF4), to 6-aminonicotinic acid was investigated for the first time. The experiments were carried out in three electrodes undivided cell under mild conditions, and the use of volatile and toxic solvents and catalysts, as well as any other additional supporting electrolytes, was avoided. The electrochemical reduction behavior of 2-amino-5-bromopyridine in BMIMBF4 had been studied by cyclic voltammetry with a reduction peak at-1.6V (vs. Ag). 6-Aminonicotinic acid was obtained in 75% yield and 100% selectivity, under the optimized condition. Moreover, the ionic liquid was successfully recycled.
HISTONE DEACETYLASE INHIBITORS FOR IMMUNOMODULATION IN TUMOR MICROENVIRONMENT
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Paragraph 0103-0106, (2021/11/06)
Provided are compounds class I HDAC inhibitors, their production and applications. The compounds possess epigenetic immunomodulatory activities in the tumor microenvironment (TME) and thus inhibit growth of tumor cells.
COMPOUNDS AND METHODS FOR TREATING CANCER
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Paragraph 0190; 0375, (2020/12/19)
Substituted cinnamamide compounds and analogs, methods of making such compounds, pharmaceutical compositions and medicaments comprising such compounds, and methods of using such compounds to treat, prevent or ameliorate cancer are provided.
Synthesis and crystallographic analysis of short pyridine-based oligoamides as DNA-targeting supramolecular binders
Frimannsson, Daniel O.,McCabe, Thomas,Schmitt, Wolfgang,Lawler, Mark,Gunnlaugsson, Thorfinnur
body text, p. 483 - 490 (2010/11/18)
In this study, the synthesis of the pyridine peptides 1-4, formed from amino-picolinic acid, and pyridine peptide 5, made from coupling of a mono-protected pyridine diamine to a mono-protected pyridine dicarboxylic acid and the X-ray crystallographic structures of 1 and 5 are discussed, along with their supramolecular interactions in the solid state. The structure of these compounds showed that they possess concave appearance which can be employed to bind to nucleic acids through multiple hydrogen bonding, which would facilitate the formation of helical-based pyridine oligoamides as novel DNA-binding molecules. This was proven by carrying out DNA denaturation studies and ethidium displacement assay on 5, but, by using MTT assays, 5 was shown to be cytotoxic against drug-resistant chronic myeloid leukaemia K562 cell-line.
Electroorganic synthesis of 6-aminonicotinic acid from 2-amino-5-chloropyridine
Ramesh Raju,Krishna Mohan,Jayarama Reddy
, p. 4133 - 4135 (2007/10/03)
A synthesis of 6-aminonicotinic acid by electrochemical hydrogenation of 5-chloro-2-nitropyridine and electrochemical carboxylation of 2-amino-5-chloropyridine at a cathode surface in the presence of sulphuric acid and carbon dioxide in a dimethylformamide (DMF) solution at an apparent current density of 10 mA/cm2 using an undivided cell with good yields is reported.
Composition of matter having bioactive properties
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, (2008/06/13)
Particles of coordinated complex comprising a basic, hydrous polymer and a capacitance adding compound, as well as methods for their production, are described. These complexes exhibit a high degree of bioactivity making them suitable for a broad range of applications through their incorporation into conventional vehicles benefiting from antimicrobial and similar properties.
Chichibabin aminations of pyridine bases
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, (2008/06/13)
Improved Chichibabin aminations of pyridine bases are described which are conducted under a pressurized gas phase containing ammonia and in the presence of a selected additive which increases the reaction rate, and also in preferred processes favorably alters the isomer ratios and product yields from the aminations while benefiting product workup and recovery as well.
Disubstituted aryl and heteroaryl imines having retinoid-like biological activity
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, (2008/06/13)
Compounds of the formula STR1 wherein the R 1 groups independently are hydrogen, lower alkyl, or two geminal R 1 groups jointly represent an oxo ( O) or a thio ( S) group; R 2 is hydrogen or lower alkyl, or halogen; M is or --N CR 4 -- or --R 4 C N-- where R 4 is hydrogen or lower alkyl; X is C(R 1) 2 ; Y is phenyl optionally substituted with an R 3 group which is lower alkyl or halogen; A is (CH 2) n where n is 0-5, lower branched chain alkyl, cycloalkyl, alkenyl, alkynyl; B is hydrogen, COOH or a pharmaceutically acceptable salt thereof, COOR 8, CONR 9 R 10, --CH 2 OH, CH 2OR 11, CH 2 OCOR 11, CHO, CH(OR 12) 2, CHOR 13 O, --COR 7, CR 7 (OR 12) 2, or CR 7 OR 13 O, where R 7 is an alkyl, cycloalkyl or alkenyl group containing 1 to 5 carbons, R 8 is an alkyl group of 1 to 10 carbons, or a cycloalkyl group of 5 to 10 carbons, or R 8 is phenyl or lower alkylphenyl, R 9 and R 10 independently are hydrogen, an alkyl group of 1 to 10 carbons, or a cycloalkyl group of 5-10 carbons, or phenyl or lower alkylphenyl, R 11 is lower alkyl, phenyl or lower alkylphenyl, R 12 is lower alkyl, and R 13 is divalent alkyl radical of 2-5 carbons have retinoid-like biological activity.
Hydrolysis of nicotinyl 6-aminonicotinate
Wang,Patel
, p. 204 - 207 (2007/10/02)
The degradation kinetics of nicotinyl 6-aminonicotinate in aqueous buffer solutions were studied over the pH range from 4.0 to 10.0. In all cases, pseudo-first-order kinetics were observed at constant hydronium ion concentration. The pH-rate profile indic
