4113-79-5Relevant academic research and scientific papers
MnO2-MWCNT nanocomposites as efficient catalyst in the synthesis of Biginelli-type compounds under microwave radiation
Safari, Javad,Gandomi-Ravandi, Soheila
, p. 72 - 77 (2013)
A novel Biginelli-like cyclocondensation reaction is efficiently catalyzed by MnO2-CNT nanocomposites as a new catalyst under microwave irradiation and solvent-free conditions in excellent yields. The major advantages of the present method are high yields, short reaction times and solvent-free reaction conditions, reducing reaction steps and purification of products by non-chromatographic methods. The activity, recovery and reusability of the catalyst are found to be good.
A novel protocol for solvent-free synthesis of 4,6-diaryl-3,4- dihydropyrimidine-2(1H)-ones catalyzed by metal oxide-MWCNTs nanocomposites
Safari, Javad,Gandomi-Ravandi, Soheila
, p. 71 - 78 (2014)
A Biginelli-like condensation is described using acetophenone as active methylene compound with aldehydes and urea to furnish pyrimidinone analogues under solvent-free conditions. In this paper, besides the preparation of nanocomposites based on MWCNTs, o
PPh3/I2-catalyzed one-pot synthesis of 4,6-diarylpyrimidin-2(1H)-ones
Zhang, Yanzhi,Lei, Min,Xue, Kangsheng,Sun, Guoxiang,Zhou, Yang,Hou, Jinjun,Long, Huali,Zhang, Zijia,Chen, Xubing,Wu, Wanying
, p. 3661 - 3668 (2020/09/11)
A method using PPh3/I2-catalyzed three-component Biginelli reaction of aromatic ketone, aromatic aldehyde and urea to synthesize4,6-diarylpyrimidin-2-(1H)-ones is described. Under the experimental conditions, the main reaction produc
Structure activity relationship, drug likeness and evaluation of antioxidant activity of some mannich bases of dihydropyrimidinones
Mamidala, Ravinder,Bhimathati, Solomon Raj S.,Vema, Aparna
, p. 1767 - 1773 (2019/07/17)
A series of 21 O- and N-Mannich bases of 3,4-dihydropyrimidinones (2a-j and 3a-k) were synthesized by using microwave irradiation technique by multi-component reaction in two steps. All the compounds were evaluated for their free radical scavenging activi
Studies on Structural Changes and Catalytic Activity of Y-zeolite Composites of 1,3-disulfoimidazolium trifluoroacetate Ionic Liquid (IL) for Three Component Synthesis of 3,4-dihydropyrimidinones
Gogoi, Pinky,Dutta, Arup Kumar,Borah, Ruli
, p. 674 - 685 (2017/03/08)
Abstract: This report describes the development of six acidic composites of Y-zeolite with 1,3-disulfoimidazolium trifluoroacetate [Dsim][CF3COO] ionic liquid (IL) and displays the gradual increase of acidic IL mediated dealumination within zeo
Synergistic antifungal effect of cyclized chalcone derivatives and fluconazole against Candida albicans
Ahmad, Aijaz,Wani, Mohmmad Younus,Patel, Mrudula,Sobral, Abilio J.F.N.,Duse, Adriano G.,Aqlan, Faisal Mohammed,Al-Bogami, Abdullah Saad
, p. 2195 - 2207 (2017/12/26)
The occurrence of invasive fungal diseases, particularly in immunocompromised patients, is life-threatening and increases the economic burden. The rising problem of multi-drug resistance is becoming a major concern for clinicians. In addition, a repertoire of antifungal agents is far less in number than antibacterial drugs. To combat these problems, combination therapy has gained a lot of interest. We previously reported the synergistic interaction of some mono- and bis-dihydropyrimidinone and thione derivatives with fluconazole and amphotericin B for combination antifungal therapy. In this study we used the same approach and synthesized different azole and non-azole derivatives of mono-(M) and bis-(B) chalcones and evaluated their antifungal activity profile alone and in combination with the most commonly used antifungal drug-fluconazole (FLC)-against seven FLC susceptible and three FLC resistant clinically isolated Candida albicans strains. Based on the minimum inhibitory concentration results, the bis-derivatives showed lower MIC values compared to their mono-analogues. Both fractional inhibitory concentration index and isobologram results revealed mostly synergistic, additive or indifferent interactions between the tested compounds and FLC against different Candida isolates. None of the tested compounds showed any effect on energy dependent R6G efflux, revealing that they do not reverse the mechanism of drug efflux. However, surprisingly, these compounds profoundly decreased ergosterol biosynthesis and showed down regulation of ERG11 gene expression, which is the possible mechanism of reversal of azole drug resistance by these compounds. These results provide a platform for further research to develop pyrimidinone/thione ring containing compounds as promising new antifungal agents, which could be used in antifungal combination therapy.
PEG-SANM nanocomposite: A new catalytic application towards clean and highly efficient Biginelli-like reaction under solvent-free conditions
Dalil Heirati, Seyedeh Zahra,Shirini, Farhad,Shojaei, Abdollah Fallah
, p. 67072 - 67085 (2016/07/30)
A series of pyrimidinone derivatives were efficiently synthesized using PEG-SANM nanocomposite as the solid acid nanocatalyst under mild and solvent-free conditions. The generality of the process was successfully demonstrated by variation of the starting
Organosilane sulfonated graphene oxide in the Biginelli and Biginelli-like reactions
Safari, Javad,Gandomi-Ravandi, Soheila,Ashiri, Samira
, p. 512 - 520 (2016/01/12)
Organosilane sulfonated graphene oxides (SSi-GO) have been synthesized by a two-step procedure involving the grafting of graphene oxide (GO) using 3-chloropropyltriethoxysilane (CCPTES) and subsequent oxidation using sulfanilic acid. It has been shown tha
Synthesis of Pyrimidinone and 5-unsubstituted 4, 6-diarylpyrimidine-2(1H)-ones by Using Nano Magnetic Catalyst under Solvent Free Condition
Amoozadeh, Ali,Azhari, Saeede,Kolvari, Eskandar,Otokesh, Somayeh
, p. 968 - 973 (2015/12/01)
Nano magnetic-supported sulfonic acid is found to be a powerful and reusable heterogeneous catalyst for the efficient synthesis of pyrimidinones. In this study we use various ketones such as acetophenone and cyclopentanone instead of β-keto ester in one-p
Green Biginelli-type Reaction: Solvent-free Synthesis of 5-unsubstituted 3,4-dihydropyrimdin-2(1H)-ones
Wang, Min,Song, Jilei,Lu, Qilin,Wang, Qinglin
, p. 1907 - 1910 (2015/11/09)
The Biginelli-type compounds, 5-unsubstituted 3,4-dihydropyrimdin-2(1H)-ones were synthesized by a one-pot three-component condensation of aromatic aldehydes, aromatic ketones and urea in the presence of SnCl4 · 5H2O under solvent-fr
