Results 81 to 90 of about 3,637 (213)
A new, simple thermally efficient and solvent-free condensation of 2-amino-3-cyano-6-methyl-4-phenyl-4H-pyran-5-ethylcarboxylate derivatives with coumarin-3-carboxylic acid employing pentafluorophenylammonium triflate (PFPAT) as an inexpensive ...
Majid Ghashang +2 more
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Studies on the properties and reactions of 1-ary1-2(1h)-pyrimidinones [PDF]
Thesis--University of Tsukuba, D.Sc.(A), no. 137, 1982.
Kato Akira, 加藤 明良
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One- Pot synthesis and reactions of Novel 5-(4-fluoro-phenyl)-3-(8-hydroxyquinolin-5- yl)-7-phenyl-5H-thiazolo[3,2-a]pyrimidine-6- carbonitrile as antimicrobial agents [PDF]
The synthesis of 5-(4-fluoro-phenyl)-3-(8-hydroxyquinolin-5-yl)-7-phenyl-5H-thiazolo[3,2-a]pyrimidine-6-carbonitrile 4 was achieved by one-potthree-component synthesis using p-TSA (10 mol %) in refluxing CH3CN.
Abdelmohsen, S.A.
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Иодирование аминопроизводных азотсодержащих гетероциклов под действием Me[4]N{+}ICl[2]{-}/AgNO{3} в метаноле [PDF]
Исследована активность тетраметиламмоний иоддихлорида в присутствии нитрата серебра в растворе метанола для электрофильного иодирования аминопроизводных азотсодержащих гетероциклов ряда пиридина, пиримидина, хинолина. Реакция иодирования протекает при 20
Краснокутская, Елена Александровна +2 more
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Background: Recently, pyrido[2,3-d] pyrimidine, triazolopyrimidine, thiazolopyrimidine, quinoline, and pyrazole derivatives have gained attention due to their diverse biological activities, including antimicrobial, antioxidant, antitubercular, antitumor,
Ameen Ali Abu-Hashem, Sami A. Al-Hussain
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Chimeric design, synthesis, and biological assays of a new nonpeptide insulin-mimetic vanadium compound to inhibit protein tyrosine phosphatase 1B [PDF]
Prior to its total synthesis, a new vanadium coordination compound, called TSAG0101, was computationally designed to inhibit the enzyme protein tyrosine phosphatase 1B (PTP1B). The PTP1B acts as a negative regulator of insulin signaling by blocking the
Do, Quoc Tuan +5 more
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HIGHLIGTHS IN 1,2,3-DITHIAZOLE CHEMISTRY [PDF]
Among the five-membered heterocycles containing nitrogen and sulphur atoms, 1,2,3-dithiazoles are important compounds due to their unusual physical properties, biological activity and versatile chemistry.
Emmanuel Deau +6 more
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Cycloaddition reactions of conjugated azoalkenes [PDF]
An overview of the use of 2H-azirines, conjugated nitrosoalkenes and conjugated azoalkenes bearing phosphorus substituents in addition and cycloaddition reactions is presented, focused on strategies for the synthesis of aminophosphonate and ...
Lemos, A.
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Investigation of structural effects on the reactivity of heterocyclic bioactive compounds [PDF]
Tese de dout., Química, Faculdade de Ciências e Tecnologia, Universidade do Algarve, 2008In the course of this investigation, structural effects on the reactivity of a series of heterocyclic compounds, in particular tetrazole and benzisothiazole ...
Frija, L.
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Katharigatta N Venugopala, 1, 2 Christophe Tratrat, 1 Melendhran Pillay, 3 Sandeep Chandrashekharappa, 4 Omar Husham Ahmed Al-Attraqchi, 5 Bandar E Aldhubiab, 1 Mahesh Attimarad, 1 Osama I Alwassil, 6 Anroop B Nair, 1 Nagaraja Sreeharsha, 1 Rashmi ...
Venugopala KN +15 more
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