26787-75-7Relevant articles and documents
Semi-Rigid Nitroxide Spin Label for Long-Range EPR Distance Measurements of Lipid Bilayer Embedded β-Peptides
Wegner, Janine,Valora, Gabriele,Halbmair, Karin,Kehl, Annemarie,Worbs, Brigitte,Bennati, Marina,Diederichsen, Ulf
, p. 2203 - 2207 (2019)
β-Peptides are an interesting new class of transmembrane model peptides based on their conformationally stable and well-defined secondary structures. Herein, we present the synthesis of the paramagnetic β-amino acid β3-hTOPP (4-(3,3,5,5-tetramethyl-2,6-dioxo-4-oxylpiperazin-1-yl)-d-β3-homophenylglycine) that enables investigations of β-peptides by EPR spectroscopy. This amino acid adds to the, to date, sparse number of β-peptide spin labels. Its performance was evaluated by investigating the helical turn of a 314-helical transmembrane model β-peptide. Nanometer distances between two incorporated β3-hTOPP labels in different environments were measured by using pulsed electron/electron double resonance (PELDOR/DEER) spectroscopy. Due to the semi-rigid conformational design, the label delivers reliable distances and sharp (one-peak) distance distributions even in the lipid bilayer. The results indicate that the investigated β-peptide folds into a 3.2514 helix and maintains this conformation in the lipid bilayer.
BENZOTHIAZEPINE AND BENZOTHIADIAZEPINE DERIVATIVES WITH ILEAL BILE ACID TRANSPORT (IBAT) INHIBITORY ACTIVITY FOR THE TREATMENT HYPERLIPIDAEMIA
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Paragraph 0198, (2018/01/13)
The present invention relates to compounds of formula (I) wherein Rv, R1, R2, Rx, Ry, M, Rz, v, R3, R4, R5 and R6 are as defined within; pharmace
Asymmetric synthesis of α-amino acids via cinchona alkaloid-catalyzed kinetic resolution of urethane-protected α-amino acid N-carboxyanhydrides
Hang,Tian,Tang,Deng
, p. 12696 - 12697 (2007/10/03)
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