Results 11 to 20 of about 9,419 (207)

Ribosomal Synthesis of Topologically Defined Thioisoindole-Bridged Bicyclic Peptides. [PDF]

open access: yesAngew Chem Int Ed Engl
A flexible in vitro translation (FIT) system‐based strategy for ribosomal synthesis of thioisoindole‐bridged bicyclic (TiB) peptides is developed. The flexizyme substrate Ac‐Ala(NtBA)Sc‐CME is efficiently incorporated into FIT to generate ribosomal peptides bearing N‐terminal Ac‐Ala(NtBA)Sc as the cyclization handle, which after mild deprotection ...
Zhang Y, Vinogradov AA, Sun Y, Suga H.
europepmc   +3 more sources

Development of a Partial Proteolysis Targeting Chimera Library Based on Achiral Cereblon E3 Ligase Ligands and its Application for Bruton's Tyrosine Kinase Degraders. [PDF]

open access: yesChemMedChem
A partial proteolysis targeting chimera (PROTAC) library bearing achiral phenyl dihydrouracil cereblon ligands is prepared. It is then applied to the rapid development of a full PROTAC library targeting Bruton's tyrosine kinase, which can be directly used for screening.
Almodóvar-Rivera CM   +5 more
europepmc   +2 more sources

Kinetics study of hydrazodicarbonamide synthesis reaction [PDF]

open access: yesChemical Industry and Chemical Engineering Quarterly, 2013
In this study, the kinetics of hydrazodicarbonamide (HDCA) synthesis reaction was investigated. Hydrazodicarbonamide is prepared by reaction of urea and hydrazine in acidic medium. Synthesis of HDCA from urea and hydrazine is a two steps reaction.
Bakeri Gh., Rahimnejad M.
doaj   +1 more source

Seventy-Day Toxicity Study in Juvenile Sprague-Dawley Rats with Semicarbazide (SEM) from Weaning to Sexual Maturity

open access: yesJournal of Toxicology, 2022
The study was conducted to evaluate the toxicological effects, functional observation battery tests, and sexual maturity of semicarbazide oral gavage administration to juvenile Sprague-Dawley rats for 70 days at 0, 15, 30, and 60 mg/kg/day weaning to ...
Vijaykumar Malashetty   +2 more
doaj   +1 more source

Synthesis, crystal structure and Hirshfeld surface analysis of catena-poly[[bis(semicarbazide-κ2N,O)copper(II)]-μ-sulfato-κ2O:O′]

open access: yesActa Crystallographica Section E: Crystallographic Communications, 2022
The title polymer, [Cu(SO4)(CH5N3O)2]n, has been synthesized from aqueous solutions of CuSO4 and semicarbazide. In the crystal structure, the CuII atoms are chelated by two neutral semicarbazide molecules through the oxygen atom and a nitrogen atom of ...
Galiya Tadjieva   +4 more
doaj   +1 more source

A Mechanistic Study on the Non-genotoxic Carcinogenicity of the Food Contaminant Semicarbazide

open access: yesSURE Journal: (Science Undergraduate Research Experience Journal), 2020
Semicarbazide was brought to the forefront of scientific discussions by the scientific community in the early 2000’s as the substance was discovered in several food products from both synthetic and natural sources.
Daniel P. Fitzpatrick
doaj   +1 more source

Synthesis of 1,6-bis(semicarbazide)hexanes and 1,6-bis(1,2,4-triazol-5-one)hexanes and their antiproliferative and antimicrobial activity [PDF]

open access: yesJournal of the Serbian Chemical Society, 2012
A series of 1,6-bis(3-substituted-4,5-dihydro-1H-1,2,4-triazol-5-on-4- yl)hexanes (3a-g) were synthesized by the cyclization reaction of 1,6-bis(1- substituted-semicarbazide-4-yl)hexanes (2a-g) in alkaline medium.
Pitucha M.   +3 more
doaj   +1 more source

Azapeptides as an Efficient Tool to Improve the Activity of Biologically Effective Peptides

open access: yesFuture Pharmacology, 2022
Peptides are highly potent biological active compounds with excellent selectivity and binding, but they have some drawbacks (e.g., low stability in vivo because of the enzymatic degradation, and fast elimination).
Karima Tarchoun   +2 more
doaj   +1 more source

Influence of semicarbazide on the peroxidation processes and Lewis carcinoma growth in mice [PDF]

open access: yesThe Ukrainian Biochemical Journal, 2014
Effects of various doses of semicarbazide on Lewis carcinoma metastasing and peroxidation processes in С57В1 mice have been investigated. In the animals with inoculated Lewis carcinoma, the semicarbazide in the dose of 1/120 LD50 had practical influence ...
L. M. Petrun
doaj   +1 more source

Residue analyses and exposure assessment of the Irish population to nitrofuran metabolites from different food commodities in 2009–2010 [PDF]

open access: yes, 2013
peer-reviewedAn exposure assessment to nitrofuran residues was performed for three human populations (adults, teenagers and children), based on residue analyses of foods of animal origin (liver, honey, eggs and aquaculture) covering the 2-year period ...
Conroy, Emma-Rose   +4 more
core   +1 more source

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