Results 51 to 60 of about 6,176 (169)
Synthesis of Some 1,4-Bis (Substituted 1,3,4-Oxadiazoles and 1,2,4-Triazoles) Benzene From Terephthalic Acid [PDF]
مجلة التربية والعلم, 1999 In this paper the synthesis of some 1,4-bis-(substituted1,3,4-oxadiazoles and 1,2,4-trizoles) benzene from terephthalic acid is reported. Terephthalic acid was esterified with absolute ethanol in presence of concentrated sulfuric acid to give ethyl ...
K. Daoud, E. Mahmood, M. Salih
doaj +1 more source
C‐Terminal Functionalization Methods of Amino Acids, Peptides, and Proteins
Chemistry – A European Journal, EarlyView.C‐terminal functionalization offers powerful routes to peptide and protein diversification, yet epimerization, hydrolysis, and selectivity remain key challenges. This Review surveys enzymatic, decarboxylative, and condensation strategies, highlighting advances toward chemo‐ and regioselective, protecting‐group‐free, atom‐efficient methods applicable to
Jay Hanssens +3 more
wiley +1 more source
Reaction of 2,5-Disubstituted-1,3,4-oxadiazoles [PDF]
, 1985 Some 5-aryl-2-mercapto-1,3,4-oxadiazole (I) reacted with maleic anhydride, maleic acid and p-benzoquinone affording 2-(5-aryl- -1,3,4-oxadiazol-2-ylthio)succinic anhydrides (II), 2-(5-aryl-1,3,4- -oxadiazol-2-ylthio)succinic acids (III) and 2-(2,5 ...
El-Barbary, Ahmed A.
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Molecular Therapy: Nucleic AcidsNonsense mutations are among the genetic causes of LRBA (lipopolysaccharide-responsive beige-like anchor) deficiency, a rare autosomal-recessive immunodeficiency disorder.
Ignazio Fiduccia +13 more
doaj +1 more source
Recent advances and prospects for high‐efficiency blue hot exciton organic light‐emitting diodes
FlexMat, EarlyView.Blue organic light‐emitting diodes (OLEDs) face great challenges in achieving the balance between color purity, device efficiency, and stability. Hot exciton materials offer a solution by rapidly converting non‐emissive triplet excitons into singlet ones through a high‐lying reverse intersystem crossing process.
Xiaoen Shi +3 more
wiley +1 more source
Oxadiazoles in Medicinal Chemistry
, 2016 Oxadiazoles are five-membered heteroaromatic rings containing two carbons, two nitrogens, and one oxygen atom, and they exist in different regioisomeric forms.
Eric Wellner (1589959) +4 more
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Química Nova1,2,4-oxadiazoles are used in a wide range of applications, including medicinal chemistry and chemistry of materials. However, this kind of oxadiazoles is not usually prepared in an undergraduate organic teaching laboratory.
Juliana L. L. Freire Regueira +2 more
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Advancing Therapies for Mycobacterial Diseases: From Small Molecules to Host‐Directed Strategies
Medicinal Research Reviews, EarlyView.ABSTRACT The global burden of multidrug‐resistant tuberculosis (MDR‐TB) and the rising incidence of nontuberculous mycobacterial (NTM) infections highlight the urgent need for innovative therapeutic strategies. Current treatments are prolonged, toxic, and increasingly compromised by resistance and limited diagnostic capacity.
Tânia Silva +23 more
wiley +1 more source
Heterocycles from saccharide hydrazones. Part I. Saccharide 1,3,4-oxadiazoles
, 1972 Oxidation, with iodine-mercuric oxide, of acetylated saccharide aroylhydrazones and of aromatic aldehyde hydrazones yields 5-aryl-2-(polyacetoxyalkyl)-1,3,4-oxadiazoles and 2,5-diaryl-1,3,4-oxadiazoles, respectively.
H. El Khadem +5 more
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Efficient Phosphonium-Mediated Synthesis of 2-Amino-1,3,4-oxadiazoles
, 2016 We present an efficient, room temperature procedure for the preparation of 2-amino-1,3,4-oxadiazoles. Oxadiazol-2-ones can be activated for SNAr substitution using phosphonium reagents (e.g., BOP).
Zhao-Kui Wan (2004907) +1 more
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