A series of cationic amphiphiles, each with an aromatic core, was prepared and investigated for antimicrobial properties. The synthesized amphiphiles in this study are bicephalic (double-headed) in that they each possess two trimethylammonium head groups and a single linear alkoxy tail. Minimum inhibitory and minimum bactericidal concentrations of these amphiphiles were in the low micromolar range. Antimicrobial activities are highly sensitive to the chain length of the hydrophobic region, and modestly reliant on the relative positioning of the head groups on the aromatic core. These trends were more pronounced in time kill assays, wherein longer chain compounds required significantly shorter times to completely kill bacteria. Microscopy suggested that the mode of cell death was lysis. Strong inhibition was observed with both biscationic compounds and monocationic comparisons against Gram-positive bacteria: only biscationic amphiphiles maintained good activity versus the Gram-negative bacteria tested. These observations provide direction for future antimicrobial structural investigations. (C) 2011 Elsevier Masson SAS. All rights reserved.
A series of cationic amphiphiles, each with an aromatic core, was prepared and investigated for antimicrobial properties. The synthesized amphiphiles in this study are bicephalic (double-headed) in that they each possess two trimethylammonium head groups and a single linear alkoxy tail. Minimum inhibitory and minimum bactericidal concentrations of these amphiphiles were in the low micromolar range. Antimicrobial activities are highly sensitive to the chain length of the hydrophobic region, and modestly reliant on the relative positioning of the head groups on the aromatic core. These trends were more pronounced in time kill assays, wherein longer chain compounds required significantly shorter times to completely kill bacteria. Microscopy suggested that the mode of cell death was lysis. Strong inhibition was observed with both biscationic compounds and monocationic comparisons against Gram-positive bacteria: only biscationic amphiphiles maintained good activity versus the Gram-negative bacteria tested. These observations provide direction for future antimicrobial structural investigations. (C) 2011 Elsevier Masson SAS. All rights reserved.
[EN] ARYL COMPOUNDS AND POLYMERS AND METHODS OF MAKING AND USING THE SAME<br/>[FR] COMPOSÉS ARYLE ET POLYMÈRES ET PROCÉDÉS DE FABRICATION ET D'UTILISATION CORRESPONDANTS
申请人:UNIV NEVADA RENO
公开号:WO2016149633A1
公开(公告)日:2016-09-22
Disclosed herein are embodiments of aryl compounds and polymers thereof that are made using methods that do not require harsh conditions or expensive reagents. The methods disclosed herein utilize precursor compounds that can be polymerized to form polycyclic aromatic hydrocarbons and polymers, such as carbon-based polymers like nanostructures (e.g., graphene or graphene-like nanoribbons).
[EN] A PROCESS FOR THE PREPARATION OF UV ABSORBERS<br/>[FR] PROCÉDÉ DE PRÉPARATION D'ABSORBEURS UV
申请人:BASF SE
公开号:WO2020144094A1
公开(公告)日:2020-07-16
The presently claimed invention relates to a novel, highly efficient and general process for the preparation of UV absorbers.
目前所声称的发明涉及一种新颖、高效和通用的紫外线吸收剂制备过程。
[EN] A PROCESS FOR THE PREPARATION OF TRIAZINE INTERMEDIATES AND A PROCESS FOR THE PREPARATION OF UV ABSORBERS THEREOF<br/>[FR] PROCÉDÉ DE PRÉPARATION D'INTERMÉDIAIRES DE TRIAZINE ET PROCÉDÉ DE PRÉPARATION D'ABSORBEURS UV ASSOCIÉS
申请人:BASF SE
公开号:WO2020144093A1
公开(公告)日:2020-07-16
The presently claimed invention relates to a novel, highly efficient and general process for the preparation of the triazine intermediates and their use in the preparation of UV absorbers.
目前所声称的发明涉及一种新颖、高效和通用的三嗪中间体制备过程及其在制备紫外线吸收剂中的应用。
Arylindenopyridines and related therapeutic and prophylactic methods
申请人:——
公开号:US20040082578A1
公开(公告)日:2004-04-29
This invention provides novel arylindenopyridines of the formula:
1
and pharmaceutical compositions comprising same, useful for treating disorders ameliorated by antagonizing Adensine A2a receptors or reducing PDE activity in appropriate cells. This invention also provides therapeutic and prophylactic methods using the instant pharmaceutical compositions.
METHODS FOR THE SYNTHESIS OF MODULAR POLY(PHENYLENEETHYNYLENES) AND FINE TUNING THE ELECTRONIC PROPERTIES THEREOF FOR THE FUNCTIONALIZATION OF NANOMATERIALS
申请人:Ait-Haddou Hassan
公开号:US20120259073A1
公开(公告)日:2012-10-11
Poly(aryleneethynylene) polymers for exfoliating and dispersing/solubilizing nanomaterial are provided herein. The poly(aryleneethynylene) polymers have unit monomer portions, each monomer portion having at least one electron donating substituent thereby forming an electron donor monomer portion, or at least one electron withdrawing substituent thereby forming an electron accepting monomer portion. Such polymers exfoliate and disperse nanomaterial without presonication of the nanomaterial.