Results 11 to 20 of about 61,653 (192)

A Review on 1,2,3 - Triazole & Piperazine Derivatives with Various Biological Activities [PDF]

open access: yesJournal of Pharmaceutical Research, 2023
The largest family of organic molecules in organic chemistry are heterocyclic compounds. A heterocyclic compound is created when an oxygen, nitrogen, sulphur, or atom of a similar element is included in place of a carbon atom.
C Geethapriya Loganathan   +4 more
doaj   +2 more sources

Photochemical ligand ejection from non-sterically promoted Ru(ii)bis(diimine) 4,4′-bi-1,2,3-triazolyl complexes [PDF]

open access: yes, 2014
Complexes of the form [Ru(diimine)2(btz)]2+ (btz = 1,1′-dibenzyl-4,4′-bi-1,2,3-triazolyl) are observed to undergo photochemical ejection of the btz ligand in the absence of any promotion through steric congestion to generate cis-bis(solvent) complexes ...
Sinopoli, Alessandro   +6 more
core   +1 more source

Synthesis of 1,4-Disubstituted Mono and Bis-triazolocarbo-acyclonucleoside Analogues of 9-(4-Hydroxybutyl)guanine by Cu(I)-Catalyzed Click Azide-Alkyne Cycloaddition [PDF]

open access: yes, 2011
A series of novel mono-1,2,3-triazole and bis-1,2,3-triazole acyclonucleoside analogues of 9-(4-hydroxybutyl)guanine was prepared via copper(I)-catalyzed 1,3-dipolar cycloaddition of N-9 propargylpurine, N-1-propargylpyrimidines/as-triazine with the ...
Krim, Jamal   +5 more
core   +1 more source

1,2,4-Oxadiazoles from cycloreversions of oxadiazabicyclo[3.2.0]heptenes: 1-azetines as thiocyanate equivalents [PDF]

open access: yes, 2013
1,3-Dipolar cycloaddition of nitrile oxides to 4-aryl-2-alkylthio-1-azetines gave a series of oxadiazabicyclo[3.2.0]heptenes as single diastereoisomers. Heating these cycloadducts in toluene resulted in an overall [2+2]-cycloreversion to give 5-alkylthio-
Khan, Musharraf   +5 more
core   +1 more source

One-Pot Synthesis of Tetrazole–Triazole Bis-Heterocycles via Ugi–Azide Reaction

open access: yesChemistry Proceedings, 2023
Bioisosteres of amide bonds such as 4,5-disubstituted-1,2,3-triazoles (4,5-DS-1,2,3-Ts) and 1,5-disubstituted tetrazoles (1,5-DST) are present in compounds with important biological activities like those that are antineoplastic, antibacterial, antifungal,
Fidel Rodriguez-Lopez   +3 more
doaj   +1 more source

Synthesis of Dihydro-3,1-benzoxazine Derivatives from 1,3-Amino Alcohols and N‑Sulfonyl-1,2,3-triazole

open access: yes, 2023
An efficient rhodium-catalyzed synthesis of dihydro-3,1-benzoxazine derivatives has been accomplished from aniline-derived 1,3-amino alcohols and N-sulfonyl-1,2,3-triazole.
Kavuri Rupa (15426210)   +3 more
core   +2 more sources

Antiproliferative Phenothiazine Hybrids as Novel Apoptosis Inducers against MCF-7 Breast Cancer

open access: yesMolecules, 2018
We designed a series of novel phenothiazine-1,2,3-triazole hybrids by the molecular hybridization strategy and evaluated their antiproliferative activity against three cancer cell lines (MDA-MB-231, MDA-MB-468 and MCF-7).
Jun-Xia Zhang   +7 more
doaj   +1 more source

Unveiling the Complete Biosynthetic Pathway of Azacitidine: A Rare 1,3,5‐Triazine Nucleoside Derived From GTP

open access: yesAngewandte Chemie, EarlyView.
The azacitidine biosynthetic gene cluster (aza BGC) was identified by the resistance‐gene‐guided comparative genomics method in Streptomyces mobaraensis IPIO2. The complete biosynthetic pathway of azacitidine, which follows a “base‐first‐then‐glycosylation” logic, was elucidated through in vivo and in vitro experiments.
Dan Wang   +6 more
wiley   +2 more sources

Site‐Specific Protein Bioconjugation Through Cellular Incorporation of Noncanonical Amino Acids

open access: yesAngewandte Chemie, EarlyView.
Genetic code expansion (GCE) enables site‐specific installation of noncanonical amino acids containing bioorthogonal conjugation handles, allowing precise, homogeneous protein modification. This review examines the principles of orthogonal translation, surveys the chemistries available for chemoselective labeling, and highlights emerging multi‐site ...
Rahul Sarkar   +2 more
wiley   +2 more sources

Naphthalen-2-yl 1-(benzamido(diethoxyphosphoryl)methyl)-1H-1,2,3-triazole-4-carboxylate

open access: yesMolbank, 2021
We have previously published new biheterocyclic phospohonic α-amino esters of the 1,2,3-triazole-benzimidazole and 1,2,3-triazole-carbazole type. The aim of the present paper was to describe a new phosponic aminoester bearing a triazole ring substituted ...
Serigne Abdou Khadir Fall   +8 more
doaj   +1 more source

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