Results 1 to 10 of about 31,966 (258)

Four pyrrole derivatives used as building blocks in the synthesis of minor-groove binders

Acta Crystallographica Section E: Crystallographic Communications, 2017
The title nitropyrrole-based compounds, C7H8N2O4, (I) (ethyl 4-nitro-1H-pyrrole-2-carboxylate), its derivative C12H14N2O4, (II) [ethyl 4-nitro-1-(4-pentynyl)-1H-pyrrole-2-carboxylate], C15H26N4O3, (III) {N-[3-(dimethyamino)propyl]-1-isopentyl-4-nitro-1H ...
Alan R. Kennedy, Abedawn I. Khalaf, Fraser J. Scott, Colin J. Suckling   +3 more
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Synthesis, Hydrolytic Stability and In Vivo Biological Study of Bioconjugates of the Tetrapeptides FELL Containing Pyrrole Moiety

Biomedicines, 2023
Background: Bioconjugates are promising alternatives for the multiple targeting of any disease. Pyrrole heterocycle is well known with many activities and is a building block of a lot of medical drugs. On the other hand, peptides are short molecules with
Boryana Borisova, Stanislava Vladimirova, Hristina Nocheva, Marie Laronze-Cochard, Stéphane Gérard, Stoyko Petrin, Dancho Danalev   +6 more
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SYNTHESIS AND SPECTROSCOPIC CHARACTERIZATION OF HYBRID MAGNETIC NANOPARTICLES, BASED ON FE@AU AND PYRROLE

Studia Universitatis Babes-Bolyai Chemia, 2017
The synthesis and characterization of Fe@Au and Fe@Au covered with pyrrole and pyrrole functionalized with N-succinimide is presented. The synthesis of Fe@Au nanoparticles, with diameters between 5 -7 nm was performed by the reverse micelles method. The
Maria-Loredana SORAN, Ovidiu PANĂ, Alexandrina NAN, Cristian LEOŞTEAN, Ioan BRATU   +4 more
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Free-radical cyclization approach to polyheterocycles containing pyrrole and pyridine rings

Beilstein Journal of Organic Chemistry, 2021
A wide range of derivatives with new pyrido[2,1-a]pyrrolo[3,4-c]isoquinoline skeleton was synthesized by free-radical intramolecular cyclization of o-bromophenyl-substituted pyrrolylpyridinium salts using the (TMS)3SiH/AIBN system.
Ivan P. Mosiagin, Olesya A. Tomashenko, Dar’ya V. Spiridonova, Mikhail S. Novikov, Sergey P. Tunik, Alexander F. Khlebnikov   +5 more
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Rate Dependence on Inductive and Resonance Effects for the Organocatalyzed Enantioselective Conjugate Addition of Alkenyl and Alkynyl Boronic Acids to β-Indolyl Enones and β-Pyrrolyl Enones

Molecules, 2021
Two key factors bear on reaction rates for the conjugate addition of alkenyl boronic acids to heteroaryl-appended enones: the proximity of inductively electron-withdrawing heteroatoms to the site of bond formation and the resonance contribution of ...
Amy Boylan, Thien S. Nguyen, Brian J. Lundy, Jian-Yuan Li, Ravikrishna Vallakati, Sasha Sundstrom, Jeremy A. May   +6 more
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{2,2′-[3-Azapentane-1,5-diylbis(nitrilomethylidyne)]dipyrrol-1-yl}(4-methylpyridine)cobalt(III) tetraphenylborate

Acta Crystallographica Section E, 2010
The title compound, [Co(C14H17N5)(C6H7N)](C24H20B) or [Co{(pyrrole)2dien}(4-Mepy)]BPh4 where (pyrrole)2dien is 2,2′-[(3-azapentane-1,5-diylbis(nitrilomethylidyne)]dipyrrole and 4-Mepy is 4-methylpyridine, contains a pentadentate (pyrrole)2dien ...
Mahmood Karimi Abdolmaleki, Kurt Mereiter, Mehdi Amirnasr, Soraia Meghdadi   +3 more
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4,5,6,7-Tetrahydroindol-4-Ones as a Valuable Starting Point for the Synthesis of Polyheterocyclic Structures

Molecules, 2021
This review focuses on the synthesis of polyheterocyclic structures with a variety of medicinal and optoelectronic applications, starting from readily available 4,5,6,7-tetrahydroindol-4-one analogs. First, routes toward the 4,5,6,7-tetrahydroindol-4-one
Tomas Horsten, Wim Dehaen
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Scientific Opinion on Flavouring Group Evaluation 77, Revision 1 (FGE.77Rev1): Consideration of Pyridine, Pyrrole and Quinoline Derivatives evaluated by JECFA (63^rd meeting) structurally related to Pyridine, Pyrrole, Indole and Quinoline Derivatives evaluated by EFSA in FGE.24Rev2 (2013) [PDF]

EFSA Journal, 2014
The Panel on Food Contact Materials, Enzymes, Flavourings and Processing Aids of the European Food Safety Authority was requested to consider evaluations of flavouring substances assessed since 2000 by the Joint FAO/WHO Expert Committee on Food Additives
EFSA Panel on Food Contact Materials, Enzymes, Flavourings and Processing Aids (CEF)
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Dibromopyrrole Alkaloids from the Marine Sponge sp

Natural Product Communications, 2009
Fourteen dibromopyrrole alkaloids were isolated from the marine sponge Acanthostylotella sp. collected in Indonesia. In addition to the known compounds 4,5-dibromo-N-(methoxy-methyl)-1 H -pyrrole-2-carboxamide ( 7 ), 4,5-dibromo-1 H -pyrrole-2 ...
Sherif Saeed Ebada, RuAngelie Edrada-Ebel, Nicole J. de Voogd, Victor Wray, Peter Proksch   +4 more
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Postdiagenetic Bacterial Transformation of Nickel and Vanadyl Sedimentary Porphyrins of Organic-Rich Shale Rock (Fore-Sudetic Monocline, Poland)

Frontiers in Microbiology, 2021
Nickel and vanadyl porphyrins belong to the so-called fossil geo- or sedimentary porphyrins. They occur in different types of organic matter-rich sediments but mostly occur in crude oils and their source rocks, oil shales, coals, and oil sands.
Robert Stasiuk, Renata Matlakowska
doaj   +1 more source