Results 211 to 220 of about 11,580 (259)

Diastereomeric Recognition of Chiral Foldamer Receptors for Chiral Glucoses

Organic Letters, 2007
[reaction: see text] Three chiral aromatic hydrazide foldamers have been designed and synthesized, in which two R- or S-proline units were incorporated at the terminals of their backbones. The 1H NMR, circular dichroism (CD), and fluorescent experiments and molecular dynamics simulations revealed that the foldamers adopted a chiral helical conformation
Chuang, Li, Gui-Tao, Wang, Hui-Ping, Yi, Xi-Kui, Jiang, Zhan-Ting, Li, Ren-Xiao, Wang   +5 more
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Chiral recognition as directional recognition

Journal of the Chemical Society, Chemical Communications, 1990
A logic of chiral recognition based on the differentiation of directions is more consistent and inclusive than one based on the differentiation of part structures.
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Increasing chiral recognition in acetal formation

Chirality, 2008
AbstractThe design of substituted lactols is described, which in their reaction with racemic alkyl aryl carbinols react preferentially with one of the enantiomers exhibiting selectivities up to 14:1. Chirality, 2009. © 2008 Wiley‐Liss, Inc.
Noe, Christian, Knollmüller, Max, Jangg, Edith, Gmeiner, Günter, Urban, Ernst, Eppacher, Simon   +5 more
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NMR studies of chiral recognition by cyclodextrins

Chirality, 2003
AbstractChiral recognition by cyclodextrins is of considerable importance, especially for pharmaceutical industry, in view of the possible side effects of the second enantiometer of chiral drugs. In general, it manifests itself in all NMR parameters (chemical shifts, coupling constants, NOE and ROE effects, and relaxation rates) on one hand.
Helena, Dodziuk, Wiktor, Koźmiński, Andrzej, Ejchart   +2 more
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Chiral Recognition of Dipeptides in a Biomembrane Model

Journal of the American Chemical Society, 2004
Chiral recognition of the enantiomeric couples of ditryptophan and diphenylalanine was observed by (1)H NMR spectroscopy in micelles formed by sodium N-dodecanoyl-L-prolinate. Ditryptophan showed a selective association with the Z domains of the amidic aggregates, whereas diphenylalanine did not show any selectivity in the association.
Bombelli C, Borocci S, Lupi F, Mancini G, Mannina L, Segre A L, Viel S   +6 more
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Chiral recognition in aggregates formed by chiral bola-amphiphiles

Tetrahedron: Asymmetry, 2010
Abstract The aggregates of three new isomeric chiral bola-amphiphiles have been taken into consideration as models for investigating chiral recognition in biological membranes. The recognition capabilities of the aggregates were explored following (by CD and HPLC experiments) the shift in the equilibrium between the inter-converting enantiomers of a ...
Ceccacci, Francesca, Profio, Pietro Di, Giansanti, Luisa, Mortera, Stefano Levi, Mancini, Giovanna, Sorrenti, Alessandro, Villani, Claudio   +6 more
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Chiral Macrocycles for Enantioselective Recognition

Journal of the American Chemical Society
The efficient synthesis of chiral macrocycles with highly enantioselective recognition remains a challenge. We have addressed this issue by synthesizing a pair of chiral macrocycles, namely, R/S-BINOL[2], achieving total isolated yields of up to 62% through a two-step reaction sequence.
Guang Sun, Xue Zhang, Zhe Zheng, Zhi-Yuan Zhang, Ming Dong, Jonathan L. Sessler, Chunju Li   +6 more
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Chiral surfaces: The many faces of chiral recognition

Current Opinion in Colloid & Interface Science, 2017
Abstract Molecular recognition is integral to many biological, synthetic, and supramolecular systems. Recognition is often the nexus that controls the path, kinetics, and mechanism of chemical and biochemical processes. Recognition can be static in the case of more rigid molecular environments, or dynamic in which either the selector, selector target,
John C. Lang, Daniel W. Armstrong
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Chiral recognition of dipeptides in Langmuir monolayers

Tetrahedron: Asymmetry, 2009
Abstract The recognition of the enantiomeric couples of ditryptophan in Langmuir films of N -hexadecanoyl- l -proline was investigated by surface pressure–area ( π – A ) isotherm measurements and Brewster angle microscopy experiments. The π – A isotherms relative to the films including the enantiomeric dipeptides show small differences whereas an ...
A Sorrenti, M Diociaiuti, V Corvaglia, P Chistolini, G Mancini   +4 more
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Biological chiral recognition: The substrate's perspective

Chirality, 2005
A novel stereocenter-recognition (SR) model has been proposed recently for describing the stereoselectivity of biological and other macromolecules towards substrates that have multiple stereocenters, based on the topology of substrate stereocenters (Sundaresan and Abrol, Prot Sci 11:1330-1339, 2002).
Vidyasankar, Sundaresan, Ravinder, Abrol
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