Results 71 to 80 of about 9,509 (221)
Synthesis of Novel Dihydropyridine‐Iminium Salts Containing a Selenazine Core
Asian Journal of Organic Chemistry, Volume 14, Issue 10, October 2025.An efficient method to develop novel dihydropyrido[3,2‐e][1,3]selenazines iminium salts. A comparative study of the key reagent selenourea towards thiourea and urea was carried out to assess the contribution of chalcogen to the pathway. DFT (density functional theory) calculations have predicted the optimized minimum energy structure for the hybrid ...
Reinier Lemos +6 more
wiley +1 more source
Design, synthesis and anticonvulsant activity of some new 5,7-dibromoisatin semicarbazone derivatives [PDF]
, 2013 A series of 5,7-dibromoisatin semicarbazones have been synthesized in good yield, involving aryl urea and aryl semicarbazide formation. The structures of the synthesized compounds were confirmed on the basis of their spectral data. All the compounds were
Kumar, Dheeraj +6 more
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ChemistryEurope, Volume 3, Issue 5, September 18, 2025.A pH‐programmable site‐selective cysteine modification in peptides is reported using a triazine–thiol exchange, termed TriTEx. At acidic pH, internal cysteines are targeted while preserving N‐terminal sites; at neutral pH, N‐terminal cysteines are selectively modified via an irreversible S–N shift.
Katerina Gavriel +5 more
wiley +1 more source
Synthesis Optimization of L-Aspartic acid β-hydroxamate by a novel Enzyme, β-Aspartyl-γ-glutamyl transferase [PDF]
, 2015 L-Aspartic acid β-hydroxamate or L-β-Aspartyl hydroxamate (BAH), water soluble- chemical compound currently obtains popularity due to its role in several important biochemical processes and to its bioactivities.
Naohara, Ryosuke +4 more
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Convulsant Effects of Semicarbazide in Epileptic Monkeys.
Experimental Biology and Medicine, 1956 Summary(1) Threshold convulsant dosages to rapid intravenous injection of semicarbazide were significantly lower in chronically epileptic monkeys than in normal unoperated controls. (2) Clinical seizures following intravenous injection of threshold convulsant doses of semicarbazide occurred after a latent period of 2 to 3 1/2 hours. With suprathreshold
L M, KOPELOFF, J G, CHUSID, N, KOPELOFF
openaire +2 more sources
Hazelnut: Explorations toward the Biocatalytic Synthesis of its Aroma Precursor
ChemBioChem, Volume 26, Issue 16, September 12, 2025.This article proposes a biosynthetic route for synthesizing filbertone, the principal flavor compound of hazelnut, through a multienzyme cascade. The pathway uses D‐amino acid oxidase, threonine deaminase, and a regioselective transketolase from Geobacillus stearothermophilus to produce a sustainable, natural hazelnut aroma precursor, addressing ...
Mireia Salvadó‐Pau +3 more
wiley +1 more source
Reviews in Aquaculture, Volume 17, Issue 4, September 2025.ABSTRACT Nitrofuran metabolites, including semicarbazide, pose significant risks to food safety, particularly in the aquatic industry. Bangladesh's shrimp industry faced major challenges due to nitrofuran contamination, leading to a voluntary export suspension to the European Union (EU).
S. M. Nazmul Alam
wiley +1 more source
Synthesis and anti-Aphid Aphis gossypii (Glover) activity of some new quinoline derivatives [PDF]
, 2010 A series of quinoline derivatives have been elaborated fromreaction of 2-(m- and p-acetylanilino)-quinolines 6a-b withaldehydes under Claisen-Schmidt conditions followed by cyclization with phenyl hydrazine and hydroxylamine.
El Kafafy, Abdel Kader +3 more
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Partially Biobased Self‐Repairing Poly(Aspartic Ester Polyurea) Coatings
Polymer Engineering &Science, Volume 65, Issue 8, Page 4155-4169, August 2025.Sustainable self‐healing PAEU coatings, containing various amounts of disulfide derived from poly(aspartic esters) and biobased polyisocyanates, were created. ABSTRACT Poly(aspartic ester polyurea) (PAEU) coating systems, which feature an uncatalyzed and solventless reaction, have attracted attention as a more environmentally friendly, nonreactive ...
Sevilay Dural +2 more
wiley +1 more source
Chemie Ingenieur Technik, Volume 97, Issue 7, Page 677-688, July 2025.Kommunale Kläranlagen gelten als Haupteintragspfad organischer Mikroschadstoffe in die aquatische Umwelt. Ein Großteil der Arzneimittelrückstände und Industriechemikalien wird in Kläranlagen nicht oder nur teilweise entfernt. Um einen qualitativ höheren Kläranlagen‐Ablauf zu erzeugen, wird eine Kombination aus hybridem Teilstrom‐Membran‐Bioreaktor mit ...
Maximilian Werner +4 more
wiley +1 more source