40124-27-4Relevant articles and documents
Synthesis and extraction studies of 1,2- And 1,3-disubstituted butylcalix[4]arene amides with oxyions; geometric and conformational effects
Falana, Olusegun M.,Koch, H. Fred,Roundhill, D. Max,Lumetta, Gregg J.,Hay, Benjamin P.
, p. 503 - 504 (1998)
26,28-(Dibutylcarbamoyl)methoxy-5,11,17,23-tert-butylcalix[4]arene and two geometric isomers of 27,28-(dibutylcarbamoyl)methoxy-5,11,17,23-tert-butylcalix[4]arene have been used to extract UVI, MoVI, CrVI and SeVI from aqueous solution into toluene or isooctane.
Biomimetic synthesis and anti-inflammatory evaluation of violacin A analogues
Wu, Wenxi,Mu, Yu,Liu, Bo,Wang, Zixuan,Guan, Peipei,Han, Li,Jiang, Mingguo,Huang, Xueshi
, (2021/04/23)
Violacin A, a chromanone derivative, isolated from a fermentation broth of Streptomyces violaceoruber, has excellent anti-inflammatory potential. Herein, a biogenetically modeled approach to synthesize violacin A and twenty-five analogues was described, which involved the preparation of aromatic polyketide precursor through Claisen condensation and its spontaneous cyclization. The inhibitory effect on nitric oxide (NO) production of all synthetic molecules was evaluated by lipopolysaccharide (LPS)-induced Raw264.7 cells. The results revealed that introduction of aliphatic amine moieties on C-7 obviously improved the anti-inflammation effect of violacin A, and also the aromatic ether instead of ketone group at side chain was favorable to increase the activity. Among them, analogue 7a and 16d were screened as the most effective anti-inflammatory candidates. Molecular mechanism research revealed that 7a and 16d acquired anti-inflammatory ability due to the inhibition of NF-κB signaling pathway.
Amide aromatic phenol antibacterial peptide analogue with antibacterial activity and preparation method thereof
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Paragraph 0085; 0086; 0098, (2018/12/03)
The invention belongs to the technical field of pharmaceutical chemistry, and discloses an amide aromatic phenol antibacterial peptide analogue with drug-resistance bacteria resistant activity and without obvious toxicity and a preparation method thereof. The target product is obtained by 3-4 reaction steps, and the main structure of the product is shown as follows. In-vitro antibacterial activityexperiments prove that most of the series of compounds have excellent activity on Gram-positive staphylococcus aureus and enterococcus faecalis, Gram-negative Escherichia coli and stenotrophomonas maltophilia, and the compounds have excellent broad spectrum antibacterial activity; moreover, in-vitro red cell hemolytic data is low in toxicity and has excellent selectivity. One part of the compounds also have excellent antibacterial activity on 'superbacteria' comprising drug-resistant methicillin staphylococcus aureus (MRSA), clinical strains producing enzymes NDM-1 and KPC-2 and the like. Therefore, the series of compounds are expected to serve as novel antibacterial candidate drugs.