Synthesis and Properties of a New Family of Chiral Mesogens Containing the 2,3-Dihydrobenzopyran Nucleus
摘要:
A new class of mesogens A with a central chiral core based on the 2,3-dihydrobenzopyran nucleus was synthesized both in the racemic and optically pure form, and the thermotropic properties were studied. The distortion from structural linearity due to the presence of the 2,3-dihydropyran ring does not inhibit the existence of mesophases, and Ch, S-A, and S-C phases were observed according to the substituents present. The conformational constrictions imposed by cyclization proved not to be very important in determining the compactness of the cholesteric helix.
Synthesis and Properties of a New Family of Chiral Mesogens Containing the 2,3-Dihydrobenzopyran Nucleus
摘要:
A new class of mesogens A with a central chiral core based on the 2,3-dihydrobenzopyran nucleus was synthesized both in the racemic and optically pure form, and the thermotropic properties were studied. The distortion from structural linearity due to the presence of the 2,3-dihydropyran ring does not inhibit the existence of mesophases, and Ch, S-A, and S-C phases were observed according to the substituents present. The conformational constrictions imposed by cyclization proved not to be very important in determining the compactness of the cholesteric helix.
Synthetic quinolone signal analogues inhibiting the virulence factor elastase of Pseudomonas aeruginosa
作者:Dávid Szamosvári、Valentin F. Reichle、Monica Jureschi、Thomas Böttcher
DOI:10.1039/c6cc06295d
日期:——
We describe the synthesis of analogs of the Pseudomonas quinolone signal and the discovery of a potent inhibitor of the important virulence factor elastase of the human pathogenPseudomonas aeruginosa.
COMPOUNDS FOR USE AS AN ANTI-BACTERIAL OR ANTI-FUNGAL AGENT AND AS A ZINC SENSOR
申请人:Universität Konstanz
公开号:EP3260445A1
公开(公告)日:2017-12-27
The present invention relates to a compound, which can be used as an anti-bacterial and/or an anti-fungal agent as well as a zinc sensor. Moreover, the present invention relates to a pharmaceutical composition comprising said compound and methods for treating bacterial or fungal infections in mammals.
[DE] CHROMON-KOMPLEXE<br/>[EN] CHROMONE COMPLEXES<br/>[FR] COMPLEXES DE CHROMONE
申请人:MERCK PATENT GMBH
公开号:WO2005097772A1
公开(公告)日:2005-10-20
Die Erfindung betrifft Komplexe bestimmter Chromon-Derivate, Zubereitungen, die solche Derivate enthalten, entsprechende Verfahren zur Herstellung der Chromon-Derivate bzw. von diese enthaltenden Zubereitungen und deren Verwendung, insbesondere zur Pflege, Konservierung oder Verbesserung des allgemeinen Zustandes der Haut oder Haare.
[DE] CHROMEN-4-ON-DERIVATE<br/>[EN] CHROMEN-4-ONE DERIVATIVES<br/>[FR] DERIVES DE CHROMENE-4-ONE
申请人:MERCK PATENT GMBH
公开号:WO2005019197A1
公开(公告)日:2005-03-03
Die Erfindung betrifft Verbindungen ausgewählt aus den Verbindungen der Formeln (Ia)-(Ic) und deren Herstellung und Verwendung in Kosmetik und Dermatologie.
该发明涉及选自以下化合物的连接(Ia)-(Ic)的制备和在化妆品和皮肤科中的使用。
A thiochromenone antibiotic derived from the <i>Pseudomonas</i> quinolone signal selectively targets the Gram-negative pathogen <i>Moraxella catarrhalis</i>
作者:Dávid Szamosvári、Tamara Schuhmacher、Christof R. Hauck、Thomas Böttcher
DOI:10.1039/c9sc01090d
日期:——
nasopharyngeal pathogen Moraxella catarrhalis. Synthetic optimization resulted in minimum inhibitory concentrations in the nanomolar range even for clinical isolates of M. catarrhalis. Surprisingly, the growth of other human pathogens and commensals, including closely related Moraxella species, was not inhibited, indicating exceptional species selectivity. Mechanistic studies revealed that the antibiotic