نتایج جستجو برای: 34 dihydropyrimidinones
تعداد نتایج: 116077 فیلتر نتایج به سال:
3,4-Dihydropyrimidinones and their derivatives are synthesized via Biginelli routes involving an aromatic aldehydes, ethylacetoacetates and urea in one-pot procedure by using CdS nanoparticles as efficient heterogeneous catalyst in solvent-free conditions. Compared with classical Biginelli reaction reported in 1893, this new method provides much improved modification in terms of simplicity. The...
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Various Biginelli compounds (dihydropyrimidinones) have been synthesized efficiently and in high yields under mild, solvent-free, and eco-friendly conditions in a one-pot reaction of 1,3-dicarbonyl compounds, aldehydes, and urea/thiourea/acetyl thiourea using lithium-acetate as a novel catalyst without the addition of any proton source. Comparative catalytic efficiency of lithium-acetate and po...
The buyer’s type is his value ∈ [ ] and the seller’s type is his cost ∈ [ ]. The buyer’s value is drawn from a distribution (·) whose density (·) is nonzero on [ ], while the seller’s cost is drawn from the distribution (·) whose density (·) is nonzero on [ ]. A trader observes his own type but not the type of the other trader. The buyer’s ex post utility from acquiring the...
Atmospheric carbon dioxide concentration [CO2] will increase in the future and will affect global climate and ecosystem productivity. Crop models used in past assessments of climate change effect on ecosystem productivity have not been adequately tested for the ability to simulate ecosystem responses to [CO2]. Our objective was to evaluate the ability of the default CROPGRO–Soybean model to pre...
1Institute of Community and Public Health, Birzeit University, Birzeit, Palestine (Correspondence to Abdullatif Husseini: [email protected]). 2Department of Biology, Al-Quds University, Jersusalem. ABSTRACT An audit was made of laboratory records of triple test results from 943 Palestinian women residing in the West Bank from 2000–03. The mean expected age at delivery of the subjects was 2...
The prevalence of type 2 diabetes mellitus (T2DM) is increasing and it is estimated that by 2030 approximately 366 million people will be diagnosed with this condition. The use of dipeptidyl peptidase IV (DPP-IV) inhibitors is an emerging strategy for the treatment of T2DM. DPP-IV is a ubiquitous aminodipeptidase that cleaves incretins such as glucagon like peptide 1 (GLP-1) and glucose-depende...
Adinoff, B. Clinical Laboratory Stressors Used to Study Alcohol–Stress Relationships Vol. 34, No. 4, Pages 459–467 Agrawal, A. Identifying Genetic Variation for Alcohol Dependence Vol. 34, No. 3, Pages 274–281 Alim, T.N. Resilience to Meet the Challenge of Addiction: Psychobiology and Clinical Considerations Vol. 34, No. 4, Pages 506–515 Ames, G.M. Prevention in the Military: Early Results of a...
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