Results 151 to 160 of about 166,370 (359)
ChemistryEurope, EarlyView.Hyperpolarization by parahydrogen‐induced polarization enhances the sensitivity of nuclear magnetic resonance spectroscopy of amino acids, peptides, mini‐proteins, and biopolymers using nonnatural amino acids with unsaturated side chains up to three orders of magnitude.
Gerd Buntkowsky
wiley +1 more source
Stereoselective Preparation of 6-b-Bromopenicillanic Acid Derivatives
, 1995 Irena Lukić
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Gold(I)‐Catalyzed Domino Cyclization for the Construction of Trispirocyclic Cyclohexanes
ChemistryEurope, EarlyView.We describe herein a series of intricate trispirocyclic architectures that have been synthesized from readily available substrates through an operationally simple one‐pot transformation under mild conditions. An unprecedented gold(I)‐catalyzed domino cyclization involving 2‐ethynylbenzyl alcohol derivatives and heterocyclic α,β‐unsaturated imines ...
Manon Genet +3 more
wiley +1 more source
Computational Study of the Stereoselectivity Profiles of the Diels-Alder Cycloaddition Reactions of Cyclopentadiene and Butadiene with Cyclopropenes [PDF]
, 2020 Veejendra K. Yadav
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ChemistryEurope, EarlyView.Cathepsin B‐sensitive peptide–adjuvant conjugates are designed, synthesized, and evaluated to deliver an antigenic peptid and an adjuvant targeting Toll‐like receptors 7 and 8 (TLR7/8) to antigen presenting cells. The adjuvant is released by cathepsin B resulting in antigen presentation and TLR mediated T cell activation.
Marjolein M. E. Isendoorn +6 more
wiley +1 more source
NH‐Sulfilimine Synthesis Catalyzed by Nonheme Iron(II) Complex
ChemistryEurope, EarlyView.Sulfilimines are emerging as valuable functional group in modern medicinal chemistry. Yet, their catalytic preparation is underexplored compared to sulfoximines. Here, the iron‐catalyzed synthesis of 14 examples of unprotected sulfilimines in good yields, under aerobic atmosphere and at room temperature, is described.
Léa Tesson +2 more
wiley +1 more source
Highly stereoselective syntheses of arsenic and phosphorus macrocycles and cages [PDF]
, 1990 S. Bruce Wild
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ChemistryEurope, EarlyView.In this work, a catalytic enantioselective imidation approach is presented for the preparation of enantioenriched sulfinamidines from sulfenamides, employing a chiral dirhodium(II) tetracarboxylate catalyst. This method enables the imidation of N,N‐bisalkyl sulfenamides in yields of up to 98% and enantiomeric ratios up to 98:2, with a catalyst loading ...
Michael Andresini +7 more
wiley +1 more source