41460-18-8

Upstream product

• 19056-83-8 diethyl 2-{[(3-methylphenyl)amino]methylene}propane-1,3-dioate 
• 87-13-8 diethyl 2-ethoxymethylenemalonate 
• 108-44-1 1-amino-3-methylbenzene 

Downstream Products

• 51726-77-3 4-hydroxy-7-methylquinoline-3-carboxylic acid 
• 63136-61-8 4-chloro-7-methyl-quinoline 
• 82121-08-2 4-hydroxy-7-methylquinoline 
• 50593-19-6 ethyl 4-chloro-7-methylquinoline-3-carboxylate 

Relevant academic research and scientific papers

Nitrogen-containing heterocyclic compound as well as preparation method, pharmaceutical composition and application thereof

The invention provides a nitrogen-containing heterocyclic compound as well as a preparation method, a pharmaceutical composition and application thereof, and particularly provides a compound as shownin a formula I which is described in the specification,

Structure-activity relationships for ferriprotoporphyrin IX association and β-hematin inhibition by 4-aminoquinolines using experimental and ab initio methods

In order to probe structure-activity relationships of association with ferriprotoporphyrin IX (log K) and inhibition of β-hematin formation, a series of 4-aminoquinolines with varying substituents at the 7-position (X) have been synthesized. These have been further elaborated by introduction of two different R groups on the 4-amino nitrogen atom in the form of methyl (R = Me) and ethylamine (R = EtNH2) side chains. Data for a previously investigated series containing an N,N-diethyl-ethylamine side chain were also compared with the findings of this study. Experimentally, log K values for the simple 4-aminoquinoline series (R = H) were found to correlate with the hydrophobicity constant (π) of the group X. The log K values for the series with R = Me and EtNH2 were found to correlate with those of the series with R = H. The log of the 50% β-hematin inhibitory activity (log BHIA50) was found to correlate with log K and either meta (σm) or para (σp) Hammett constants for the series with R = Me and EtNH2, but not the simple series with R = H. To further improve predictability, correlations with ab initio electrostatic parameters, namely Mulliken and CHelpG charges were investigated. The best correlations were found with CHelpG charges which indicated that log K values can be predicted from the charges on atom H-8 and the group X in the quinolinium species computed in vacuum, while log BHIA50 values can be predicted from the CHelpG charges on C-7, C-8 and N-1 for the neutral species in vacuum. These correlations indicate that association and inhibition of β-hematin formation are separately determined. They also suggest that electron withdrawing groups at the 7-position, but not necessarily hydrophobic groups are required for hemozoin inhibition. The upshot is that the correlations imply that considerably more hydrophilic hemozoin inhibitors are feasible.

Design, synthesis, and biological evaluation of novel quinoline derivatives as HIV-1 Tat-TAR interaction inhibitors

Thirty-two quinoline derivatives were designed and synthesized as HIV-1 Tat-TAR interaction inhibitors. All the compounds showed high antiviral activities in inhibiting the formation of SIV-induced syncytium in CEM174 cells. Nine of them with low cytotoxicities were evaluated by Tat dependent HIV-1 LTR-driven CAT gene expression colorimetric enzyme assay in human 293T cells, indicating effective inhibitory activities of blocking the Tat-TAR interaction. Molecular modeling experiments indicated that these compounds may inhibit Tat-TAR interaction by binding to Tat protein instead of TAR RNA.

Synthesis of selected novel covalently linked flavoquinolones

The synthesis of novel covalently linked flavoquinolones via amide bond is described using mixed anhydride method and their spectroscopic studies have been done by UV/Vis and 1H NMR spectroscopic data. Georg Thieme Verlag Stuttgart.

Oxazolo, thiazolo and selenazolo [4,5-c]-quinolin-4-amines and analogs thereof

Thiazolo-, oxazolo- and selenazolo[4,5-c]quinolin-4-amines and analogs thereof are described including methods of manufacture and the use of novel intermediates. The compounds are immunomodulators and induce cytokine biosynthesis, including interferon and/or tumor biosynthesis, necrosis factor, and inhibit the T-helper-type 2 immune response. The compounds are further useful in the treatment of viral and neoplastic diseases.

Structure-activity relationship investigations of the modulating effect of core substituents on the affinity of pyrazoloquinolinone congeners for the benzodiazepine receptor

A series of 6- and 7-substituted-2-arylpyrazolo [4,3-c] quinolin-3-ones was synthesized and tested in vitro for binding with the benzodiazepine receptor in competition with [3H]flunitrazepam. Electronic parameters (molecular electrostatic potential (MEP), charge distribution on the nitrogen atoms, dipole moment μ, and ionization potential (IP) were calculated for the compounds by semi-empirical quantum chemistry methods. Lipophilicity of the compounds, expressed as logarithm of the octanol-water partition coefficient (log P), was calculated by the program Pallas. A quantitative correlation of the biological data with molecular parameters revealed a significant dependence (r = 0.95) of the activity on hydrophobic constants of the substituents, log P, and magnitude of the MEP minimum associated with the carbonyl oxygen atom.