Results 1 to 10 of about 147,809 (300)

Intramolecular Hydrogen Bond Expectations in Medicinal Chemistry. [PDF]

open access: yesACS Med Chem Lett, 2017
Design strategies centered on intramolecular hydrogen bonds are sometime used in drug discovery, but their general applicability has not been addressed beyond scattered examples or circumstantial evidence. A total of 1053 matched molecular pairs where only one of the two molecules is able to form an intramolecular hydrogen bond via monatomic ...
Giordanetto F, Tyrchan C, Ulander J.
europepmc   +4 more sources

Intramolecular Hydrogen Bonding 2021 [PDF]

open access: yesMolecules, 2021
Undoubtedly, hydrogen bonds occupy a leading place in the rich world of intermolecular interactions [...]
openaire   +4 more sources

Intramolecular Hydrogen Bond Energy and Its Decomposition—O–H∙∙∙O Interactions

open access: yesCrystals, 2020
The method to calculate the energy of intramolecular hydrogen bond is proposed and tested for a sample of malonaldehyde and its fluorine derivatives; the corresponding calculations were performed at the ωB97XD/aug-cc-pVTZ level.
Sławomir J. Grabowski
doaj   +1 more source

A Spectroscopic Overview of Intramolecular Hydrogen Bonds of NH…O,S,N Type

open access: yesMolecules, 2021
Intramolecular NH…O,S,N interactions in non-tautomeric systems are reviewed in a broad range of compounds covering a variety of NH donors and hydrogen bond acceptors. 1H chemical shifts of NH donors are good tools to study intramolecular hydrogen bonding.
Poul Erik Hansen
doaj   +1 more source

Study on the turn structure of polypeptides containing glycine and L-proline

open access: yesJournal of Hebei University of Science and Technology, 2016
The formation of turn structure in peptide chains has direct relations with intramolecular hydrogen bonds, therefore the existence of this bond can be tested to research the turn structure.
Yong ZHANG   +3 more
doaj   +1 more source

Crystal structure of 3-[({2-[bis(2-hydroxybenzyl)amino]ethyl}(2-hydroxybenzyl)amino)methyl]-2-hydroxy-5-methylbenzaldehyde

open access: yesActa Crystallographica Section E, 2014
The non-symmetric title molecule, C32H34N2O5, is based on a tetrasubstituted ethylenediamine backbone. The molecular structure consists of three hydroxybenzyl groups and one 2-hydroxy-5-methylbenzaldehyde group bonded to the N atoms of the diamine unit ...
Alexandra S. Fonseca   +1 more
doaj   +1 more source

Hydrogen bonding interactions of benzylidene type Schiff bases studied by vibrational spectroscopic and computational methods [PDF]

open access: yes, 2003
The structural features of four benzylidene type Schiff bases [(E)-benzaldehyde-N-phenyl imine, (A) (E)-2-hydroxybenzaldehyde-N-phenyl imine (B) (E)-benzaldehyde-N-2-hydroxyphenyl imine (C) (E)-2-hydroxybenzaldehyde-N-2-hydroxyphenyl imine (D)] were ...
Aakeroy   +27 more
core   +1 more source

Intramolecular hydrogen bonding of (+)-biotin and biotin derivatives in organic solvents [PDF]

open access: yes, 2001
Copyright © ARKAT USA, IncThe document attached has been archived with permission from the publisher.The intramolecular hydrogen bonding of (+)-biotin and biotin derivatives in mixtures of CDCl3 and DMSO-d6 was investigated by 1H NMR spectroscopy.
Crisp, Geoffrey T., Jiang, Yu-Lin
core   +1 more source

N-(3-Methylphenyl)-N′-(4-nitrobenzoyl)thiourea

open access: yesActa Crystallographica Section E, 2008
Two molecules of the title compound, C15H13N3O3S, are linked by an intermolecular N—H...S hydrogen bond. There is also an intramolecular N—H...O hydrogen bond, forming a six-membered ring.
Liang Xian
doaj   +1 more source

Methyl 2-[(ferrocenylcarbonyl)amino]thiophene-3-carboxylate [PDF]

open access: yes, 2005
The title compound, [Fe(C₅H₅)(C₁₂H₁₀NO₃S)], was synthesized from ferrocenecarboxylic acid and methyl 2-aminothiophene-3-carboxylate in modest yield. The substituted ring system is essentially planar through the amidothienylcarboxylate moiety, η⁵-(C₅H₄ ...
Alley, Steven   +3 more
core   +1 more source

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