Synthesis and Biological Evaluation of a Novel Series of 1,3-Dicoumarinyl-5-aryl-2-pyrazolines
摘要:
In the present paper novel 1,3,5-trisubstituted 2-pyrazolines (4a-q) were synthesized via condensation of different substituted 3-cinnamoyl-2-oxo-2H-chromenes (2a-q) with 2-(4-methyl-2-oxo-2H-chromen-7-yloxy)acetohydrazide (3). Chalcones were prepared via Claisen-Schmidt condensation by refluxing 3-acetyl-2-oxo-2H-chromen (1) with corresponding aldehydes in ethanol, in the presence of piperidine. All of these compounds were characterized by means of their IR, (1)H NMR and LC/MS/MS spectroscopic data and elemental microanalysis. Chalcones and pyrazolines were screened for their antioxidant and iron chelating activity.
Microwave-assisted synthesis of new fluorinated coumarin–pyrimidine hybrids as potent anticancer agents, their DNA cleavage and X-ray crystal studies
作者:Kallappa. M. Hosamani、Dinesh S. Reddy、Hirihalli. C. Devarajegowda
DOI:10.1039/c4ra12222d
日期:——
Rapid and high yielding synthesis of new fluorinated coumarin–pyrimidine hybrids and their application as potent anticancer agents is described.
快速高产量合成新的氟化香豆素-嘧啶杂化物,并将其应用作强效抗癌剂。
Synthesis and pharmacological evaluation of a novel series of 5-(substituted)aryl-3-(3-coumarinyl)-1-phenyl-2-pyrazolines as novel anti-inflammatory and analgesic agents
A novel series of 5-(substituted)aryl-3-(3-coumarinyl)-1-phenyl-2-pyrazolines (3a–l) were synthesized by reacting various substituted 3-aryl-1-(3-coumarinyl)propan-1-ones (2a–l) with phenylhydrazine in the presence of hot pyridine. Structures of all new synthesized compounds were characterized on the basis of elemental analysis and spectral data (IR, 1H NMR and 13C NMR). The title compounds were screened
通过使各种取代的3-芳基-1-(3-香豆基)丙烷反应,合成了一系列新的5-(取代)芳基-3-(3-香豆基)-1-苯基-2-吡唑啉(3a - l)。在热吡啶存在下与苯肼形成1-ones(2a – l)。根据元素分析和光谱数据(IR,1 H NMR和13 C NMR)对所有新合成化合物的结构进行表征。以12 mg制备的化合物中的化合物3d,e,i和j为原料,以200 mg / kg bw的剂量筛选标题化合物的体内抗炎和镇痛活性。在角叉菜胶诱导的大鼠水肿爪等急性炎症模型中显示出显着的抗炎活性,而在3D辅助佐剂诱发的关节炎等慢性炎症模型中,化合物3d和e显示出显着的活性,并与双氯芬酸(13.5 mg / kg bw)进行了比较作为标准药物。还发现这些化合物在乙酸诱导的扭体模型中具有显着的镇痛活性,在酵母诱导的发热模型中具有最小的致溃疡指数,具有解热活性。
Synthesis and Biological Evaluation of a Novel Series of 1,3-Dicoumarinyl-5-aryl-2-pyrazolines
作者:Milan Čačić、Maja Molnar、Ivica Strelec
DOI:10.3987/com-11-12196
日期:——
In the present paper novel 1,3,5-trisubstituted 2-pyrazolines (4a-q) were synthesized via condensation of different substituted 3-cinnamoyl-2-oxo-2H-chromenes (2a-q) with 2-(4-methyl-2-oxo-2H-chromen-7-yloxy)acetohydrazide (3). Chalcones were prepared via Claisen-Schmidt condensation by refluxing 3-acetyl-2-oxo-2H-chromen (1) with corresponding aldehydes in ethanol, in the presence of piperidine. All of these compounds were characterized by means of their IR, (1)H NMR and LC/MS/MS spectroscopic data and elemental microanalysis. Chalcones and pyrazolines were screened for their antioxidant and iron chelating activity.
Analgesic study of novel pyrimidine derivatives linked with coumarin moiety
作者:Jitendra Kumar Gupta、Pramod K. Sharma、Rupesh Dudhe、Anshu Chaudhary、Avnesh Singh、P. K. Verma、Sambhu C. Mondal、Rakesh Kumar Yadav、Shivjee Kashyap
DOI:10.1007/s00044-011-9675-4
日期:2012.8
A novel series of 2-amino-4-(coumarin-3-yl)-6-substituted phenyl pyrimidines (5a-h) were synthesized from 3-acetylcoumarin (3). The structures of the synthesized compounds were elucidated by I.R., H-1 NMR, C-13 NMR, and Mass spectroscopic techniques. The synthesized compounds were screened for in vivo analgesic activities at a dose of 20 mg/kg body weight (b.w). Among them, compounds 5b and 5h exhibited significant analgesic activity comparable with control as well as standard drug diclofenac sodium using acetic acid-induced writhing model.
Synthesis and Characterization of Some Heteroaromatic Derivatives of 3-But-2-enoyl-chromen-2-one and Their Potential as Anti-inflammatory Agents
作者:Priyanka Dixit、Avinash C. Tripathi、Shailendra K. Saraf
DOI:10.1002/jhet.1772
日期:2013.11
mass spectroscopy, and elemental analysis data. All the newly synthesized compounds were evaluated for their anti‐inflammatory activity at a dose of 100 mg/kg body weight in carrageenan‐induced rat paw edema model. The entire series of the compounds exhibited moderate to good anti‐inflammatory activity, with the percentage inhibition of edema formation ranging from 39.99 to 63.15 against the reference