cas 453-71-4, 4-Fluoro-3-nitrobenzoic acid

Articles about 453-71-4Total 14 be found

Article title
Article abstract
Author
Journal number and time
Download

Substituent effects on the isomerization of hydrazone switches driven by the intramolecular hydrogen bond
In this work, the substituent effects on hydrogen bonding in one kind of hydrazone-based switch are revealed. The E/Z isomerization ratios of these hydrazones and their intramolecular hydrogen bond strengths in the Z form were evaluated using NMR technique. Linear correlations between these parameters and Hammett empirical values for substituent effects are explored as well.
Lu, Chaocao,Htan, Bu,Fu, Shitao,Ma, Chunmiao,Gan, Quan
p. 4010 - 4016
(2019/07/03)

IMINOTETRAHYDROPYRIMIDINONE DERIVATIVES AS PLASMEPSIN V INHIBITORS
A series of 2-imino-6-methyltetrahydropyrimidin-4(lH)-one derivatives, substituted in the 6-position by a phenyl moiety which in turn is meta-substituted by an optionally substituted unsaturated fused bicyclic ring system containing at least one nitrogen atom, being selective inhibitors of plasmepsin V activity, are beneficial as pharmaceutical agents, especially in the treatment of malaria.
-
Page/Page column 53

(2017/07/05)

Synthesis of a secretoglobin 3A2 type C (98–139) fragment by Dawson's native chemical ligation
A secretoglobin 3A2 type C (98–139) peptide was synthesized by native chemical ligation between 115Ile and 116Cys residues using Dawson's linker. The peptide-N-acyl-benzimidazolinone-glycine amide, a C-terminal thioesters precursor, was provided from 3-amino-4-(methylamino)benzoic acid. In addition, an N-terminal cysteine fragment, the (116–139) peptide, was prepared by ordinary Fmoc-solid phase peptide synthesis. Native chemical ligation of the (98–115) fragment with the Dawson's linker and the (116–139) peptide smoothly proceeded to give SCGB3A2 type C (98–139) peptide.
Kikuchi, Mariko,Kurotani, Reiko,Konno, Hiroyuki
supporting information
p. 4145 - 4148
(2017/09/29)

A one-pot synthesis of tetrazolones from acid chlorides: Understanding functional group compatibility, and application to the late-stage functionalization of marketed drugs
A one-pot and scalable synthesis of tetrazolones (tetrazol-5-ones) from acid chlorides using azidotrimethylsilane is presented. The reaction tolerates many functional groups and can furnish aryl-, heteroaryl-, alkenyl-, or alkyl-substituted tetrazolone products in moderate to excellent yield (14-94%). No reduction in yield was observed when the reaction was undertaken on a larger-scale (20-36 g). The method could be used for the late-stage functionalization of pharmaceuticals, to provide tetrazolone congeners of the marketed drugs aspirin, indomethacin, probenecid, telmisartan, bexarotene, niacin (vitamin B3), and the active metabolite of the recently-launched immuno-modulatory agent, BG-12 (Tecfidera). The ability of a tetrazolone group to serve as a bioisostere of a carboxylic acid, and to improve drug pharmacokinetic profiles is also highlighted.
Duncton, Matthew A. J.,Singh, Rajinder
supporting information
p. 9338 - 9342
(2016/10/13)

Stable and easily accessible functional dyes: Dihydrotetraazaanthracenes as versatile precursors for higher acenes
Abstract A series of new dihydrotetraazaanthracenes and one new dihydrotetraazatetracene as substances for applications in organoelectronic devices and as suitable building blocks for higher azaacenes was synthesised. The condensation of aromatic diamines with dichlorodicyanopyrazine led to these tricyclic/tetracyclic compounds. Syntheses of N-substituted phenylenediamines were developed to enable the introduction of multiple functional groups such as ester, amino, or nitro groups on the chromophoric system. Relationships between the structure and the spectroscopic properties could be derived from UV/Vis absorption and fluorescence spectroscopy, as well as by DFT and TD-DFT calculations of molecular and aggregate structures. The absorption spectra are dominated by π-π transitions of the single molecules, whereas aggregation needs to be taken into account to obtain reasonable agreement between theory and experiment in certain cases. Single-crystal X-ray analyses were carried out to examine the morphology and solid packing effects. Finally, a dihydrotetraazaanthracene was used as a building-block to create a mesoionic octaazapentacene. Dihydroazaacenes: A series of dihydrotetraazaanthracenes and one new dihydrotetraazatetracene as substances for applications in organoelectronic devices and as suitable building blocks for higher azaacenes was synthesised. Single-crystal X-ray analyses were carried out to examine the morphology and solid packing effects. Finally, a dihydrotetraazaanthracene was used as a building-block to create a mesoionic octaazapentacene.
Gampe, Dominique Mario,Kaufmann, Martin,Jakobi, D?rthe,Sachse, Torsten,Presselt, Martin,Beckert, Rainer,G?rls, Helmar
p. 7571 - 7581
(2015/05/13)

Aromatic triazole foldamers induced by C-H...X (X = F, Cl) intramolecular hydrogen bonding
Aryl-triazole oligomers based on isobutyl 4-fluorobenzoate and isobutyl 4-chlorobenzoate were designed and synthesized. Crystal structure and 1H-1H NOESY experiments demonstrate that the oligomers adopt stable helical conformation, which are induced by C5-H...X-C (X = F, Cl) intramolecular hydrogen bonding between triazole protons and halogen atoms. The stabilities of the folded conformations are confirmed by DFT calculations, which show that each C5-H...F-C planar interaction lowers the energy by ～3 kcal mol-1 on average, and by ～1 kcal mol-1 when C5-H...Cl-C bridges are formed. The hydrogen-bonding networks are disrupted in competitive hydrogen-bonding media such as DMSO, generating the unfolded oligomers.
Shang, Jie,Gallagher, Nolan M.,Bie, Fusheng,Li, Qiaolian,Che, Yanke,Wang, Ying,Jiang, Hua
p. 5134 - 5144
(2014/06/23)

INDOLE COMPOUNDS OR ANALOGUES THEREOF USEFUL FOR THE TREATMENT OF AGE-RELATED MACULAR DEGENERATION (AMD)
The present invention provides a compound of formula (I): a method for manufacturing the compounds of the invention, and its therapeutic uses. The present invention further provides a combination of pharmacologically active agents and a pharmaceutical composition.
-
Page/Page column 240-241

(2012/07/27)

Cycloalkylated benzothiadiazines, a process for their preparation and pharmaceutical compostions containing them
Compounds of formula (I): wherein: RCy represents an unsubstituted or substituted cycloalkyl group or cycloalkylalkyl group,R1, R2, R3 and R4, which may be the same or different, each represent a hydrogen or halogen atom or a nitro group; a cyano group; a hydroxy group; an alkoxy group; an alkyl group; an unsubstituted or substituted amino group; a carboxy group; an alkoxycarbonyl group; an aryloxycarbonyl group; an unsubstituted or substituted aminocarbonyl group. Medicinal products containing the same which are useful in treating or preventing conditions treatable by an AMPA receptor modulator.
-
Page/Page column 22-23

(2010/02/17)

INHIBITORS OF STEAROYL-COA DESATURASE
Provided herein are compounds of the formula (I): as well as pharmaceutically acceptable salts thereof, wherein the substituents are as those disclosed in the specification. These compounds, and the pharmaceutical compositions containing them, are useful for the treatment of diseases such as, for example, obesity.
-
(2009/06/27)

BENZOIMIDAZOLE, TETRAHYDRO-QUINOXALINE, BENZOTRIAZOLE, DIHYDRO-IMIDAZO[4,5-c] PYRIDINONE AND DIHYDRO-ISOINDOLONE DERIVATIVES
This invention relates to compounds of the formula wherein A, R1 to R3 are as defined in the specification and G is benzoimidazole, quinoxaline, benzotriazole, dihydro-imidazo[4,5-c]pyridine and dihydro-isoindolone group as defined in the specification, and pharmaceutically acceptable salts thereof. The invention further relates to pharmaceutical compositions containing such compounds, to a process for their preparation and to their use for the treatment and/or prevention of diseases which are associated with the modulation of SST receptors subtype 5.
-
Page/Page column 20

(2008/12/08)

Viral polymerase inhibitors
An isomer, enantiomer, diastereoisomer, or tautomer of a compound, represented by formula I: wherein R1 is selected from: H, haloalkyl, (C1-6)alkyl, (C2-6)alkenyl, (C3-7)cycloalkyl, (C2-6)alkynyl, (C5-7)cycloalkenyl, 6 or 10-membered aryl, Het all optionally substituted; R2 is selected from (C1-6)alkyl, (C3-7)cycloalkyl, (C6-10)bicycloalkyl, 6- or 10-membered aryl, or Het all optionally substituted; B is N or CR5, wherein R5 is H, halogen, haloalkyl, (C1-6)alkyl, (C3-7)cycloalkyl or (C1-6)alkyl-(C3-7)cycloalkyl; X is N or CR5; D is N or CR5; each of Y1 and Y2 is independently O or S; Z is O, N, or NRz wherein Rz is H, (C1-6)alkyl, (C3-7)cycloalkyl or (C1-6)alkyl-(C3-7)cycloalkyl; R3 and R4 are each independently H, (C1-6)alkyl, first (C3-7)cycloalkyl or 6- or 10-membered aryl, Het (C1-6)alkyl-6- or 10-membered aryl, (C1-6)alkyl-Het; or each R3 and R4 are independently covalently bonded together to form second (C3-7)cycloalkyl, or heterocycle, all optionally substituted; or when Z is N, either R3 or R4 are independently covalently bonded thereto to form a nitrogen-containing heterocycle; R7 is H, (C1-6 alkyl), (C3-7)cycloalkyl or (C1-6)alkyl-(C3-7)cycloalkyl; or R7 is covalently bonded to either of R3 or R4 to form a heterocycle; A is (C1-6) alkyl-CONHR8 wherein R8 is-6- or 10-membered aryl, or Het; or A is a 6- or 10-membered aryl, or Het said aryl or Het being optionally substituted; or a salt or a derivative thereof; such compounds being potent inhibitors of HCV NS5B polymerase.
-
Page 21

(2010/02/06)

A novel antibacterial 8-chloroquinolone with a distorted orientation of the N1-(5-amino-2,4-difluorophenyl) group
Fluoroquinolones represent a major class of antibacterial agents with great therapeutic potential. In this study, we designed m-aminophenyl groups as novel N-1 substituents of naphthyridones and quinolones. Among newly synthesized compounds, 7-(3-aminoazetidin-1-yl)-1-(5-amino-2,4-difluorophenyl)-8-chloro-6- fluoro-4-oxo-1,4-dihydroquinoline-3-carboxylic acid (4) has extremely potent antibacterial activities against Gram (+) as well as Gram (-) bacteria. This compound is significantly more potent than trovafloxacin against clinical isolates: 30 times against Streptococcus pneumoniae and 128 times against methicillin resistant Staphylococcus aureus. The structure-activity relationship (SAR) study revealed that a limited combination of 1-(5-amino-2,4-difluorophenyl) group, 7-(azetidin-1-yl) group, and 8-Cl atom (or Br atom or Me group) gave potent antibacterial activity. An X-ray crystallographic study of a 7-(3-ethylaminoazetidin-1-yl)-8-chloro derivative demonstrated that the N-1 aromatic group was remarkably distorted out of the core quinolone plane by steric repulsion between the C-8 Cl atom and the N-1 substituent. Furthermore, a molecular modeling study of 4 and its analogues demonstrated that a highly distorted orientation was induced by a steric hindrance of the C-8 substituent, such as Cl, Br, or a methyl group. Thus, their highly strained conformation should be a key factor for the potent antibacterial activity.
Kuramoto, Yasuhiro,Ohshita, Yoshihiro,Yoshida, Jiro,Yazaki, Akira,Shiro, Motoo,Koike, Tohru
p. 1905 - 1917
(2007/10/03)

Viral polymerase inhibitors
A compound of the formula I: wherein: X is CH or N; Y is O or S; Z is OH, NH2, NMeR3, NHR3; OR3 or 5- or 6-membered heterocycle, having 1 to 4 heteroatoms selected from 0, N and S, said heterocycle being optionally substituted with from 1 to 4 substituents; A is N, COR7 or CR5, wherein R5 is H, halogen, or (C1-6) alkyl and R7 is H or (C1-6 alkyl), with the proviso that X and A are not both N; R6 is H, halogen, (C1-6 alkyl) or OR7, wherein R7 is H or (C1-6 alkyl); R1 is selected from the group consisting of 5- or 6-membered heterocycle having 1 to 4 heteroatoms selected from O, N, and S, phenyl, phenyl(C1-3)alkyl, (C2-6)alkenyl, phenyl(C2-6)alkenyl, (C3-6)cycloalkyl, (C1-6)alkyl, CF3, 9- or 10-membered heterobicycle having 1 to 4 heteroatoms selected from O, N and S, wherein said heterocycle, phenyl, phenyl(C2-6)alkenyl and phenyl(C1-3)alkyl), alkenyl, cycloalkyl, (C1-6)alkyl, and heterobicycle are all optionally substituted with from 1 to 4 substituents R2 is selected from (C1-6)alkyl, (C3-7)cycloalkyl, (C3-7)cycloalkyl(C1-3)alkyl, (C6-10)bicycloalkyl, adamantyl, phenyl, and pyridyl, all of which is optionally substituted with from1 to 4 substituents; R3 is selected from H, (C1-6)alkyl, (C3-6)cycloalkyl, (C36)cycloalkyl(C1-6)alkyl, (C6-10)aryl, (C6-10)aryl(C1-6)alkyl, (C2-6)alkenyl, (C3-6)cycloalkyl(C2-6)alkenyl, (C6-10)aryl(C2-6)alkenyl, N{(C1-6)alkyl}2, NHCOO(C1-6)alkyl(C6-10)aryl, NHCO(C6-10)aryl, (C1-6)alkyl-5- or 10-atom heterocycle, having 1 to 4 heteroatoms selected from O, N and S, and 5- or 10-atom heterocycle having 1 to 4 heteroatoms selected from O, N and S; wherein said alkyl, cycloalkyl, aryl, alkenyl and heterocycle are all optionally substituted with from 1 to 4 substituents; n is zero or 1; or a detectable derivative or salt thereof. The compounds of the invention may be used as inhibitors of hepatitis C virus replication. The invention further provides a method for treating or preventing hepatitis C virus infection.
-
(2008/06/13)

Catalytic hydrogenation of 3-acyl-6-fluoronitrobenzenes to 3-alkyl-6-fluoroanilines.
-
OELSCHLAGER,SCHMERSAHL
p. 324 - 336
(2007/10/05)

Chemical Properties

Appearance/Colour :white to light yellow crystal powder
Melting Point: 120-126 °C
Boiling Point: 356.9 °C at 760 mmHg
Flash Point:169.6 °C
Density: 1.568 g/cm³
Solubility:95% ethanol: soluble50mg/mL, clear, light yellow
Storage Temp.:Refrigerator
Vapor Pressure: 1.03E-05mmHg at 25°C
Refractive Index: 1.588
PKA: 3.54±0.10(Predicted)
BRN: 2107562
PSA: 83.12000
LogP: 1.95530

Global suppliers and manufacturers of 453-71-4total 103 suppliers on LookChem

Company Name
Business Type
Min Order
FOB Price
Main Products
Contact

Dayang Chem (Hangzhou) Co.,Ltd.
Business Type:Lab/Research institutions
Min Order:1 Kilogram
FOB Price:USD $ 3.0-3.0 / Kilogram
Main Products:993
Country:

Simagchem Corporation
Business Type:Manufacturers
Min Order:1 Metric Ton
FOB Price:No Data
Main Products:110
Country:

Henan Allgreen Chemical Co.,Ltd
Business Type:Manufacturers
Min Order:1 Kilogram
FOB Price:No Data
Main Products:34
Country:

Ality Chemical Corporation
Business Type:Other
Min Order:1
FOB Price:No Data
Main Products:165
Country:

Enke Pharma-tech Co.,Ltd. （Cangzhou, China ）
Business Type:Manufacturers
Min Order:1 Kilogram
FOB Price:USD $ 5.0-5.0 / Kilogram
Main Products:53
Country:

COLORCOM LTD.
Business Type:Manufacturers
Min Order:1 Metric Ton
FOB Price:No Data
Main Products:42
Country:

Chemwill Asia Co., Ltd.
Business Type:Manufacturers
Min Order:5 Kiloliter
FOB Price:USD $ 1.2-5.0 / Kiloliter
Main Products:56
Country:

Hebei Nengqian Chemical Import and Export Co., LTD
Business Type:Trading Company
Min Order:1 Kilogram
FOB Price:USD $ 1.0-10.0 / Kilogram
Main Products:162
Country:

Zhuozhou Wenxi import and Export Co., Ltd
Business Type:Trading Company
Min Order:1 Kilogram
FOB Price:USD $ 139.0-210.0 / Kilogram
Main Products:1
Country:

Shanghai Upbio Tech Co.,Ltd
Business Type:Lab/Research institutions
Min Order:1 Kilogram
FOB Price:No Data
Main Products:30
Country:

Qingdao Beluga Import and Export Co., LTD
Business Type:Lab/Research institutions
Min Order:1 Gram
FOB Price:No Data
Main Products:116
Country:

Henan Wentao Chemical Product Co., Ltd.
Business Type:Lab/Research institutions
Min Order:No Data
FOB Price:No Data
Main Products:43
Country:

Xiamen Hisunny Chemical Co.,Ltd
Business Type:Manufacturers
Min Order:No Data
FOB Price:No Data
Main Products:39
Country:

Hangzhou Keyingchem Co.,Ltd
Business Type:Lab/Research institutions
Min Order:No Data
FOB Price:No Data
Main Products:102
Country:

Hangzhou J&H Chemical Co., Ltd.
Business Type:Lab/Research institutions
Min Order:No Data
FOB Price:No Data
Main Products:46
Country:

Chemlyte Solutions
Business Type:Other
Min Order:100 Gram
FOB Price:No Data
Main Products:198
Country:

Zibo Hangyu Biotechnology Development Co., Ltd
Business Type:Lab/Research institutions
Min Order:10 Gram
FOB Price:No Data
Main Products:3496
Country:

Henan Tianfu Chemical Co., Ltd.
Business Type:Lab/Research institutions
Min Order:100 Gram
FOB Price:No Data
Main Products:67
Country:

Shanghai Minstar Chemical Co., Ltd
Business Type:Lab/Research institutions
Min Order:1 Gram
FOB Price:USD $ 65.0-65.0 / Gram
Main Products:119
Country:

TAIZHOU ZHENYU BIOTECHNOLOGY CO., LTD
Business Type:Lab/Research institutions
Min Order:1 Kilogram
FOB Price:USD $ 2.0-2.0 / Kilogram
Main Products:90
Country:

Post a RFQ

Cas No.:

Product Name:

Quantity:

Email:

Company name:

Valid Period:

Detailed Requirements:

Enter 15 to 2000 letters.Word count: 0 letters

Attach files(File Format: Jpeg, Jpg, Gif, Png, PDF, PPT, Zip, Rar,Word or Excel Maximum File Size: 3MB)

What can I do for you?
Get Best Price

Get Best Price for 453-71-4

Article Database

453-71-4

Articles about 453-71-4Total 14 be found

More Articles about upstream products of 453-71-4

Chemical Properties

Appearance/Colour :white to light yellow crystal powder

Melting Point: 120-126 °C

Boiling Point: 356.9 °C at 760 mmHg

Flash Point:169.6 °C

Density: 1.568 g/cm³

Solubility:95% ethanol: soluble50mg/mL, clear, light yellow

Storage Temp.:Refrigerator

Vapor Pressure: 1.03E-05mmHg at 25°C

Refractive Index: 1.588

PKA: 3.54±0.10(Predicted)

BRN: 2107562

PSA: 83.12000

LogP: 1.95530

Global suppliers and manufacturers of 453-71-4total 103 suppliers on LookChem

Article Database

453-71-4

Articles about 453-71-4Total 14 be found

More Articles about upstream products of 453-71-4

Chemical Properties

Appearance/Colour :white to light yellow crystal powder

Melting Point: 120-126 °C

Boiling Point: 356.9 °C at 760 mmHg

Flash Point:169.6 °C

Density: 1.568 g/cm3

Solubility:95% ethanol: soluble50mg/mL, clear, light yellow

Storage Temp.:Refrigerator

Vapor Pressure: 1.03E-05mmHg at 25°C

Refractive Index: 1.588

PKA: 3.54±0.10(Predicted)

BRN: 2107562

PSA: 83.12000

LogP: 1.95530

Global suppliers and manufacturers of 453-71-4total 103 suppliers on LookChem

Density: 1.568 g/cm³