3-d]pyrimidine
![Molecular Structure, Nbo Charges, Vibrational Assignments, Homo Lumo and Fukui Functions of Pyrazino [2, 3 D] Pyrimidine based on DFT Calculations](data:image/gif;base64,R0lGODlhAQABAIAAAP///wAAACH5BAEAAAAALAAAAAABAAEAAAICRAEAOw==)
Molecular Structure, Nbo Charges, Vibrational Assignments, Homo Lumo and Fukui Functions of Pyrazino [2, 3 D] Pyrimidine based on DFT Calculations
... One of the main objectives of organic and medicinal chemistry is to design, synthesize and produce molecules possessing value as human therapeutic agents. Compounds containing heterocyclic ring systems are of great ...
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Ethyl 6 methyl 2 (3 nitrophenoxy) 4 oxo 3 phenyl 3,4 dihydrofuro[2,3 d]pyrimidine 5 carboxylate
... The structure is stabilized by weak C—H O hydrogen- bond interactions (Table 1) that link the molecules into interconnected rows along b (Fig. 2). Further stability is provided by offset – stacking interactions (Janiak, ...
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Synthesis, characterization and in vitro antimicrobial activity of novel fused pyrazolo[3,4-c]pyridazine, pyrazolo[3,4-d]pyrimidine, thieno[3,2-c]pyrazole and pyrazolo[3′,4′:4,5]thieno[2,3-d]pyrimidine derivatives
... pounds; 3, 13, 2, 12a and 20 showed promising broad spectrum antibacterial activities against ...6, 3 and 14 showed the minimum inhib- itory concentrations (MIC) for most tested bacteria and fungi, while ...
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3 Bromo 7 methoxy 2 (tetrahydropyran 2 yl)pyrazolo[4,3 d]pyrimidine
... Data collection: SMART (Siemens, 1996); cell re®nement: SMART; data reduction: SAINT (Siemens, 1996) and SADABS (Sheldrick, 1996); program(s) used to solve structure: SHELXS97 (Sheldrick, 1997); program(s) used to re®ne ...
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4 Chloro 1H pyrrolo[2,3 d]pyrimidine
... Cl1 0.0695 (5) 0.0685 (5) 0.0662 (5) −0.0334 (4) 0.0343 (4) −0.0032 (3) C1 0.0408 (11) 0.0391 (11) 0.0427 (12) −0.0039 (9) 0.0195 (9) 0.0030 (9) C2 0.0379 (10) 0.0418 (12) 0.0393 (11) −0.0043 (9) 0.0193 (9) 0.0025 ...
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A Facile Synthesis and Docking Studies of N-(3-(4-Chlorophenoxy)benzyl)-2-methyl-7H-pyrrolo[2,3-d]pyrimidin-4-amine
... the pyrimidine nucleous: pyrrolo[2.3-d]pyrimidine, ...pyrrolo[3.4- d]pyrimidine, pyrrolo[1.2-a]pyrimidine and ...aminopyrroles. Pyrimidine derivatives have occupied a ...
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Tandem Knoevenagel-Michael-cyclocondensation reaction of malononitrile, various aldehydes and barbituric acid derivatives using isonicotinic acid as an efficient catalyst
... pyrano[2,3-d]pyrimidine dione derivatives. Various aromatic aldehydes containing electron-with drawing substituents, electron- releasing substituents and halogens on their aromatic rings were used ...
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Synthesis and Antitumor Activity of Novel Thienopyrimidine Derivatives Containing Thiosemicarbazide Moiety
... In the course of finding novel chemical agents that may serve as innovative antitumor agents, quinazoline de- rivatives are of particular interest [5]. In the last few years, the thieno[2,3-d]pyrimidine ...
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DISCOVERY OF SUBSTITUTED IMIDAZO [1, 2 c] PYRIDO [3, 2 e] PYRIMIDINE BASED DERIVATIVES AS NOVEL ANTI MICROBIAL AGENTS
... All chemical were purchased from Sigma Aldrich with purity not less than 99.9%. Analytical Thin Layer Chromatography (TLC) was carried out by using silica gel 60 F254 pre-coated plates. Visualization was accomplished ...
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A green approach to electrosynthesis of chromeno[3’,4’:5,6] pyrano [2,3-d] pyrimidines
... pyrano[2,3-d] pyrimidine compounds based on electrochemically induced multicomponent reaction of barbituric acid, aromatic aldehydes and 4-hydroxycumarin in an undivided cell containing an iron electrode as ...
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A Simple and Efficient Microwave Assisted Synthesis of Pyrazolo [3,4-D] [1,2,4] Triazolo [1,5-A] Pyrimidines
... Black, C.; Wang, D.; Claassen, G.; Chong, J.-H.; Chao, J.; Fan, J.; Nguyen, K.; Silvian, L.; Ling, L.; Zhang, L.; Choi, M.; Teng, M.; Pathan, N.; Zhao, S.; Li, T.; Taveras, A. Bioorganic & Medicinal Chemistry ...
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Crystal structure of 1 ethylpyrazolo[3,4 d]pyrimidine 4(5H) thione
... Me´dicaments, D M P, Ministe`re de la Sante´, Madinat Al Irnane, BP 6206, Rabat, Morocco, and c Laboratoire de Chimie du Solide Applique´e, Faculte´ des Sciences, Universite´ Mohammed V-Agdal, Avenue Ibn Battouta, ...
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Synthesis, characterization and antihyperlipidemic activity of novel condensed pyarazolo [3,4 d]pyrimidine derivatives
... The concept of “Mutual Prodrugs”, which comprise of two pharmacological agents, coupled together so that each acts as a promoiety for the other agent was therefore of interest to us. There are numerous examples in the ...
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Green approach for synthesizing Pyrimido pyrimidine moieties using TBAB
... as solvents under MW irradiation (150W) conditions as shown in Table1. The reaction proceeded efficiently when aqu. Tetrabutyl ammonium bromide was used as solvent resulting in higher yields in comparison to the other ...
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2 Anilino 5,7 dimethylpyrazolo[1,5 a]pyrimidine 3 carbonitrile
... As shown in Fig. 1, the two independent molecules (A with N1 and B with N6) in the asymmetric unit of (I) have a similar conformation. In both molecules (A and B), the pyrazolo[1,5-a]pyrimidine rings are ...
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2 [3 Methoxy 5 (pyrimidin 2 yl)phenyl]pyrimidine
... crystal, the molecules are connected by two kinds of C— H N hydrogen bonds, forming zigzag chains along the c axis. Weak – interactions between the benzene and one of the pyrimidine rings are also found and stack ...
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1 (3 Chlorobenzyl)pyrimidine 2,4(1H,3H) dione
... Uracil (5 mmol) and anhydrous potassium carbonate (6 mmol) were mixed in N,N-dimethylformamide (20 ml). A solution of 3-chloro- benzyl chloride (0.81 g, 5 mmol) in acetone (10 ml) was then added dropwise, with ...
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7 (4 Methylphenyl)pyrazolo[1,5 a]pyrimidine 3 carbonitrile
... The geometry of the pyrazolopyrimidine system is very similar to that reported in the related compounds 2,7-dimethyl- 5-acetylaminopyrazolo[1,5-a]pyrimidine (Ballard et al., 1975), ...
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H NMR, 13 C NMR, mass spectra and elemental analysis. All the
... An equimolar mixture of 3-methyl-1-(10H- phenothiazin-8-yl)-1H-pyrazol-5(4H)-one (3), an appropriate aldehyde (0.01 mol) and thiourea (0.01 mol) was heated under refluxed in ethanol (30ml) in the presence ...
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Crystal structure of 1 methyl 4 methylsulfanyl 1H pyrazolo[3,4 d]pyrimidine
... pyrazolo[3,4-d]pyrimidine ring system and the methylsulfanyl group lie on a crystallographic mirror plane. In the crystal, molecules are linked via a number of – interactions [centroid–centroid distances ...
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