邻氨基苯甲酸(1摩尔)在吡啶溶液中与苯甲酰氯(2摩尔)反应,以高收率得到2-苯基-4 H -3,1-苯并恶嗪-4-酮。与1摩尔。然而,得到了苯甲酰氯的苯并恶嗪酮和N-苯并氰基邻氨基苯甲酸的混合物。已经研究了反应的机理,并制备了各种2-取代的-4 H -3,1-苯并恶嗪-4-酮,并记录了它们的uv光谱。
Substituent Effects on Energetics of Peptide-Carboxylate Hydrogen Bonds as Studied by <sup>1</sup>H NMR Spectroscopy: Implications for Enzyme Catalysis
作者:Bright U. Emenike、Albert Tianxiang Liu、Elsy P. Naveo、John D. Roberts
DOI:10.1021/jo401762m
日期:2013.12.6
Substituenteffects in N–H···O hydrogenbonds were estimated by comparing the acidities of two series of model compounds: N-benzoylanthranilic acids (A) and 4-benzoylamidobenzoic acids (B). Intramolecular N–H···O hydrogenbonds were found to be present in the A series of compounds, while B acids were used as control models. The respective pKa values for A and B acids were determined experimentally
:在N-H ... O氢键键取代基的效果通过比较的两个系列的模型化合物的酸度估计Ñ -benzoylanthranilic酸(甲)和4- benzoylamidobenzoic酸(乙)。发现在A系列化合物中存在分子内N–H··O氢键,而将B酸用作对照模型。使用质子NMR光谱在DMSO溶液中通过实验确定A和B酸的相应p K a值。其中X = H,在p ķ一个为阿和乙酸观察为7.6和11.6,分别为4.0单位(ΔP的差ķ一个)。然而,随着X = p -NO 2,该ΔP ķ一个之间值甲和乙酸增加至4.7单位:所述p ķ一个为值甲和乙酸被分别确定为6.7和11.4。的ΔP ķ一之间的值甲和乙作为X的取代基的一个功能酸用在其他实施例10研究了。X取代基在A中的作用可以根据观察到的线性Hammett相关性预测酸,并且发现每个取代基效应的敏感性都与被取代的苯甲酸电离所观察到的敏感性相当(A酸的ρ= 1.04
Structural Optimization and Structure–Activity Relationship of 4-Thiazolidinone Derivatives as Novel Inhibitors of Human Dihydroorotate Dehydrogenase
and anti-leukemic drugs. The development of promising hDHODH inhibitors is in high demand. Based on the unique binding mode of our previous reported 4-thiazolidinone derivatives, via molecular docking method, three new series 4-thiazolidinone derivatives were designed and synthesized as hDHODH inhibitors. The preliminary structure–activity relationship was investigated. Compound 9 of biphenyl series
Synthesis of some new glutamine linked 2,3-disubstituted quinazolinone derivatives as potent antimicrobial and antioxidant agents
作者:M. K. Prashanth、H. D. Revanasiddappa
DOI:10.1007/s00044-012-0269-6
日期:2013.6
streak dilution method. The compound 5b was found to exhibit the most potent in vitro anti-microbial activity. When tested for their antioxidant activity, compounds 5i and 5l showed potentradical scavenging activity, while compound 5g had moderate effect against 2,2-diphenyl-1-picrylhydrazyl, hydroxyl, nitric oxide, and superoxide radical scavenging assays. These results suggest that, the three quinazolinone
[EN] AMIDE DERIVATIVES AND THEIR USE AS CHLORIDE CHANNEL BLOCKERS<br/>[FR] DERIVES AMIDE ET LEUR UTILISATION EN TANT QU'AGENTS BLOQUANT LES CANAUX CHLORURE
申请人:NEUROSEARCH AS
公开号:WO2004022525A1
公开(公告)日:2004-03-18
The present invention relates to novel amide derivatives useful as chloride channel blockers. In other aspects the invention relates to the use of these compounds in a method for therapy, such as for the treatment of bone metabolic diseases, diseases responsive to modulation of the mast cell or basophil activity, diseases responsive to inhibition of angiogenesis, or sickle cell anaemia, and to pharmaceutical compositions comprising the compounds of the invention.
Bio-inspired flavonol and quinolone dioxygenation by a non-heme iron catalyst modeling the action of flavonol and 3-hydroxy-4(1H)-quinolone 2,4-dioxygenases
作者:József S. Pap、Andrea Matuz、Gábor Baráth、Balázs Kripli、Michel Giorgi、Gábor Speier、József Kaizer
DOI:10.1016/j.jinorgbio.2011.11.013
日期:2012.3
The mononuclear complex, FeIII(O-bs)(salen) (salenH2 = 1,6-bis(2-hydroxyphenyl)-2,5-diaza-hexa-1,5-diene; O-bsH = O-benzoylsalicylic acid) was synthesized as synthetic enzyme-depside complex, and characterized by spectroscopic methods and X-ray crystal analysis. The dioxygenation of flavonol (flaH) and 3-hydroxy-4-quinolone (quinH2) derivatives in the presence of catalytic amounts of FeIII(O-bs)(salen)