102-14-7Relevant articles and documents
Conjugates of desferrioxamine and aromatic amines improve markers of iron-dependent neurotoxicity
Carvalho, Rodrigo R. V.,Peres, Tanara V.,Liria, Cleber W.,Machini, M. Teresa,Aschner, Michael,Espósito, Breno P.
, p. 259 - 275 (2021)
Abstract: Alzheimer’s Disease (AD) is a complex neurodegenerative disorder associated in some instances with dyshomeostasis of redox-active metal ions, such as copper and iron. In this work, we investigated whether the conjugation of various aromatic amines would improve the pharmacological efficacy of the iron chelator desferrioxamine (DFO). Conjugates of DFO with aniline (DFOANI), benzosulfanylamide (DFOBAN), 2-naphthalenamine (DFONAF) and 6-quinolinamine (DFOQUN) were obtained and their properties examined. DFOQUN had good chelating activity, promoted a significant increase in the inhibition of β-amyloid peptide aggregation when compared to DFO, and also inhibited acetylcholinesterase (AChE) activity both in vitro and in vivo (Caenorhabditis elegans). These data indicate that the covalent conjugation of a strong iron chelator to an AChE inhibitor offers a powerful approach for the amelioration of iron-induced neurotoxicity symptoms. Graphic abstract: [Figure not available: see fulltext.]
Rational Design of an Indolebutanoic Acid Derivative as a Novel Aldose Reductase Inhibitor Based on Docking and 3D QSAR Studies of Phenethylamine Derivatives
Sun, Won Suck,Park, Yoon Sun,Yoo, Jakyung,Park, Ki Duk,Kim, Sung Han,Kim, Jung-Han,Park, Hyun-Ju
, p. 5619 - 5627 (2003)
A series of 45 phenethylamine derivatives were synthesized and evaluated for their inhibitory activity against pig kidney aldose reductase (ALR2, EC 1.1.1.21). Their IC50 values ranged from 400 μM to 24 μM. The binding modes of compounds at the active site of ALR2 were examined using flexible docking. The results indicated that phenethylamine derivatives nicely fit into the active pocket of ALR2 by forming various hydrogen bonding and hydrophobic interactions. 3D-QSAR analysis was also conducted using FlexX-docked alignment of the compounds. The best prediction was obtained by CoMSIA combined with hydrophobic and hydrogen bond donor/acceptor field (q 2 = 0.557, r2 = 0.934). A new derivative, 4-oxo-4-(4-hydroxyindole)butanoic acid, was designed, taking into account the CoMSIA field and the binding mode derived by FlexX docking. This rationally designed compound exhibits an ALR2 inhibition with an IC50 value of 7.4 μM, which compares favorably to that of a well-known ALR2 inhibitor, tolrestat (IC50 = 16 μM) and represents a potency approximately 240-fold higher than that of an original phenethylamine lead compound, YUA001.
Facile syntheses and characterization of hyperbranched poly(ester-amide)s from commercially available aliphatic carboxylic anhydride and multihydroxyl primary amine
Li, Xiuru,Zhan, Jie,Li, Yuesheng
, p. 7584 - 7594 (2004)
A new method for synthesis of novel hyperbranched poly(ester-amide)s from commercially available AA′ and CBx type monomers has been developed on the basis of a series of model reactions. The hyperbranched poly(ester-amide)s with multihydroxyl end groups are prepared by thermal polycondensation of carboxyl anhydrides (AA′) and multihydroxyl primary amine (CBx) without any catalyst and solvent. The reaction mechanism in the initial stage of polymerization was investigated with in situ 1H NMR. In the initial stage of the reaction, primary amino groups of 2-amino-2-ethyl-1,3-propanediol (AEPO) or tris(hydroxymethyl)aminomethane (THAM) react rapidly with anhydride, forming an intermediate which can be considered as a new ABx type monomer. Further self-polycondensation reactions of the ABx molecules produce hyperbranched polymers. Analysis using 1H and 13C NMR spectroscopy revealed the degree of branching of the resulting polymers ranging from 0.36 to 0.55. These hyperbranched poly(ester-amide)s contain configurational isomers observed by 13C and DEPT 13C NMR spectroscopy, possess high molecular weights with broad distributions and display glass-transition temperatures (Tgs) between 7 and 96°C. The thermogravimetric analytic measurements revealed the decomposition temperature at 10% weight-loss temperatures (Td10%) ranging from 212 to 325°C. Among the hyperbranched poly(ester-amide)s obtained, the polymers with cyclohexyl molecular skeleton structure exhibit the lowest branching degree, the highest glass-transition temperatures, and the best thermal stability.
Polysubstituted purine compound as well as preparation method and application thereof
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Paragraph 0098-0100, (2021/10/27)
The invention discloses a polysubstituted purine compound as shown in a formula (I) and a pharmaceutically acceptable salt thereof. The invention discloses a preparation method and application thereof. The invention also discloses an obvious inhibition ef
Design, synthesis and biological evaluation of anilide (dicarboxylic acid) shikonin esters as antitumor agents through targeting PI3K/Akt/mTOR signaling pathway
Ma, Yingying,Yang, Xiaorong,Han, Hongwei,Wen, Zhongling,Yang, Minkai,Zhang, Yahan,Fu, Jiangyan,Wang, Xuan,Yin, Tongming,Lu, Guihua,Qi, Jinliang,Lin, Hongyan,Wang, Xiaoming,Yang, Yonghua
, (2021/04/12)
Triple-negative breast cancer (TNBC) has an unfavorable prognosis attribute to its low differentiation, rapid proliferation and high distant metastasis rate. PI3K/Akt/mTOR as an intracellular signaling pathway plays a key role in the cell proliferation, m
