Synthesis of Non-centrosymmetric Dipolar 4,4'-Bipyridines: Potential Molecular Tectons for Programmed Assembly of Supramolecular Systems.
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DOI: 10.1002/cplu.202200425
Abstract: In this report, we describe a modular synthesis approach towards a new series of non-centrosymmetric, dipolar 4,4'-bipyridines bearing 2,6- and 3,5-functionalized pyridyl moieties at the peripheries. Central to our strategy is the selective substitution on… read more here.
Keywords: non centrosymmetric; centrosymmetric dipolar; synthesis non; dipolar bipyridines ... See more keywords
Synthesis of Non‐Symmetrical Nitrogen‐Containing Curcuminoids in the Pursuit of New Anticancer Candidates
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DOI: 10.1002/open.201800287
Abstract: Abstract Curcumin is known to display pronounced anticancer effects and a variety of other biological activities. However, the low bioavailability and fast metabolism of this molecule present an issue of concern with respect to its… read more here.
Keywords: synthesis non; non symmetrical; symmetrical nitrogen; nitrogen containing ... See more keywords
Synthesis of non-symmetrical alkynylpyridines by chemoselective Sonogashira cross-coupling reactions
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DOI: 10.1016/j.tet.2019.130559
Abstract: Abstract 4-Bromo-2,3,5-trichloro-6-iodopyridine was studied as a new substrate in chemoselective Sonogashira reactions. This approach provides an efficient access to non-symmetrical mono-, di-, tri- and pentaalkynylated pyridines in good yields. Selected pentaalkynylated pyridines were studied with… read more here.
Keywords: synthesis non; non symmetrical; symmetrical alkynylpyridines; alkynylpyridines chemoselective ... See more keywords
Total Chemical Synthesis of a Non-Fibrillating Human Glycoinsulin.
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DOI: 10.1021/jacs.9b11424
Abstract: Glycosylation is an accepted strategy to improve the therapeutic value of peptide and protein drugs. Insulin and its analogues are life-saving drugs for all type I and 30% of type II diabetic patients. However, they… read more here.
Keywords: insulin; synthesis non; total chemical; non fibrillating ... See more keywords
Concise enantioselective synthesis of non-proteinogenic α-aminoacids via an organocatalytic Mannich-type reaction.
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DOI: 10.1039/d2cc04909k
Abstract: A bifunctional tertiary amine-squaramide-catalyzed enantioselective Mannich-type addition of available allomaltol to N-protected aldimines was developed. The resulted adducts were readily transformed into non-proteinogenic α-amino acids and their derivatives were not easily accessible by other methods… read more here.
Keywords: enantioselective synthesis; proteinogenic aminoacids; synthesis non; concise enantioselective ... See more keywords
On-surface synthesis of non-benzenoid conjugated polymers by selective atomic rearrangement of ethynylarenes
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DOI: 10.1039/d2sc04722e
Abstract: Here, we report a new on-surface synthetic strategy to precisely introduce five-membered units into conjugated polymers from specifically designed precursor molecules that give rise to low-bandgap fulvalene-bridged bisanthene polymers. The selective formation of non-benzenoid units… read more here.
Keywords: surface synthesis; synthesis non; conjugated polymers; polymers selective ... See more keywords
Synthesis of Non-Aromatic Pyrroles Based on the Reaction of Carbonyl Derivatives of Acetylene with 3,3-Diaminoacrylonitriles
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DOI: 10.3390/molecules28083576
Abstract: The reaction of 3,3-diaminoacrylonitriles with DMAD and 1,2-dibenzoylacetylene was studied. It is shown that the direction of the reaction depends on the structure both of acetylene and of diaminoacrylonitrile. In the reaction of DMAD with… read more here.
Keywords: reaction; aromatic pyrroles; pyrroles based; based reaction ... See more keywords