Design, synthesis, and complementary recognition of β-hairpin peptides stabilized by artificial DNA base-pairing amino acids
作者:Katsuhiro Isozaki、Kazushi Miki
DOI:10.1039/b924239b
日期:——
A novel DNA base-pairing beta-hairpin peptide involving intramolecular hydrogen bonds for induction of beta-hairpin secondary structure and intermolecular complementary hydrogen bonds between thymine and diaminopyridine for molecular recognition has been synthesized.
[EN] ORGANIC MOLECULES FOR TERAHERTZ TAGGING APPLICATIONS<br/>[FR] MOLÉCULES ORGANIQUES POUR DES APPLICATIONS DE MARQUAGE PAR TÉRAHERTZ
申请人:COUNCIL SCIENT IND RES
公开号:WO2015104722A1
公开(公告)日:2015-07-16
The present invention discloses substituted heterocyclic compounds and /or aromatic compounds containing amide and/or urea groups exhibiting resonance in the range of 0.1- 10 THz. The invention also discloses binary molecular complexes based on the substituted heterocyclic compounds and/or aromatic compounds containing amide and/or urea groups of the present invention. The compounds and binary molecular complexes of the present invention have varying molecular mass and hydrogen bond strengths demonstrating several resonances below 10 THz. The compounds and binary molecular complexes of the present invention are customizable for various applications, such as authentication of a product.
Experimental and theoretical study of thymine and cytosine derivatives: the crucial role of weak noncovalent interactions
作者:Miquel Barceló-Oliver、Beatriz A. Baquero、Antonio Bauzá、Angel García-Raso、Angel Terrón、Ignasi Mata、Elies Molins、Antonio Frontera
DOI:10.1039/c2ce25580d
日期:——
In this paper we report the synthesis of N1-hexylthymine (1), N1-hexylcytosine (2), N1-hexylcytosine hydrobromide (3) and [(N1-hexylcytosinium)·(N1-hexylcytosine)]2·[Cl2Hg(μ-Cl)2HgCl2] (4) (the hemiprotonated form of the N1-hexylcytosine forming a CHC+ pair with carbonyl-amino symmetric and N3–N3 recognitions) and X-ray characterization of compounds 1, 3 and 4. In the solid state, N1-hexylthymine 1 follows exactly the same behaviour as N1-hexyluracil. In addition to strong hydrogen bonding interactions, various weak forces, i.e. C–H/π, carbonyl–carbonyl (CO⋯CO) and anion–π interactions (between the bromide and N1 of cytosine in 3), play a key role in stabilizing the 3D architectures of the compounds. The theoretical calculations allow estimation of the strength of these contacts and how they influence each other.
USE OF N-(PYRIDIN-2-YL)-AMIDE AND PHENYL-UREA DERIVATIVES FOR TERAHERTZ TAGGING APPLICATIONS
申请人:Council Of Scientific & Industrial Research
公开号:EP3392240A1
公开(公告)日:2018-10-24
The present invention discloses substituted heterocyclic compounds and /or aromatic compounds containing amide and/or urea groups exhibiting resonance in the range of 0.1-10 THz. The invention also discloses binary molecular complexes based on the substituted heterocyclic compounds and /or aromatic compounds containing amide and/or urea groups of the present invention. The compounds and binary molecular complexes of the present invention have varying molecular mass and hydrogen bond strengths demonstrating several resonances below 10 THz. The compounds and binary molecular complexes of the present invention are customizable for various applications, such as authentication of a product.