Synthetic Strategies to Derivatizable Triphenylamines Displaying High Two-Photon Absorption
摘要:
[Graphics]A versatile synthetic strategy to access a set of highly fluorescent g-conjugated triphenylamines bearing a functional linker at various positions on one phenyl ring is described. These compounds were designed for large two-photon absorption (2PA) and in particular for labeling of biomolecules. The monoderivatized trisformylated or trisiodinated intermediates described herein allow introduction of a large variety of electron-withdrawing groups required for large 2PA as well as a panel of chemical functions suitable for coupling to biomolecules. The monoderivatized three-branched compounds and in particular the benzothiazole JP-3Bz) series show remarkable linear (high extinction coefficients and high quantum yield) and nonlinear (high 2-photon cross sections) optical properties. Interestingly the presence of functional side chains does not disturb the two-photon absorption. Finally, monoderivatized two-branched derivatives also appear to be valuable candidates. Altogether the good optical properties of the new derivatizable pi-conjugated TPA combined with their small size and their compatibility with bioconjugation protocols suggest that they represent a new chemical class of labels potentially applicable for the tracking of biomolecules using two-photon scanning microscopy.
Optimization of the central linker of dicationic bis-benzimidazole anti-MRSA and anti-VRE agents
作者:Laixing Hu、Maureen L. Kully、David W. Boykin、Norman Abood
DOI:10.1016/j.bmcl.2009.05.061
日期:2009.7
A series of bis-benzimidazole diamidine compounds containing different central linkers has been synthesized and evaluated for in vitro antibacterial activities, including drug-resistant bacterial strains. Seven compounds have shown potent antibacterial activities. The anti-MRSA and anti-VRE activities of compound 1h were more potent than that of the lead compound 1a and vancomycin. (C) 2009 Elsevier Ltd. All rights reserved.
US3948861A
申请人:——
公开号:US3948861A
公开(公告)日:1976-04-06
[EN] TELOMERASE INHIBITOR<br/>[FR] INHIBITEUR DE TELOMERASE
申请人:GERON CORP
公开号:WO2002053155A1
公开(公告)日:2002-07-11
The present invention provides a telomerase inhibitor containing as an active ingredient a compound which has the 4-oxo-2-thioxoimidazolidine skeleton and which has telomerase inhibitory activity.
COMPOUNDS AND APPLICATIONS THEREOF IN FIELD OF OPTOELECTRONICS
Provided are compounds including a structural unit of one of formulas (1)-(4). Also provided are formulations containing the compounds, at least one organic solvent, and/or the organic resins. Further provided are organic light-emitting devices containing the compounds.
Synthetic Strategies to Derivatizable Triphenylamines Displaying High Two-Photon Absorption
[Graphics]A versatile synthetic strategy to access a set of highly fluorescent g-conjugated triphenylamines bearing a functional linker at various positions on one phenyl ring is described. These compounds were designed for large two-photon absorption (2PA) and in particular for labeling of biomolecules. The monoderivatized trisformylated or trisiodinated intermediates described herein allow introduction of a large variety of electron-withdrawing groups required for large 2PA as well as a panel of chemical functions suitable for coupling to biomolecules. The monoderivatized three-branched compounds and in particular the benzothiazole JP-3Bz) series show remarkable linear (high extinction coefficients and high quantum yield) and nonlinear (high 2-photon cross sections) optical properties. Interestingly the presence of functional side chains does not disturb the two-photon absorption. Finally, monoderivatized two-branched derivatives also appear to be valuable candidates. Altogether the good optical properties of the new derivatizable pi-conjugated TPA combined with their small size and their compatibility with bioconjugation protocols suggest that they represent a new chemical class of labels potentially applicable for the tracking of biomolecules using two-photon scanning microscopy.