The number and distances of positive charges of polyamine side chains in a series of perylene diimides significantly influence their ability to induce G-quadruplex structures and inhibit human telomerase
摘要:
We have synthesized eight polyamine perylene diimides to conjugate the efficiency of perylene derivatives in stabilizing G-quadruplex structures and the polyamines' biological activity, due to specific interactions with different DNA domains. Our study was carried out by investigating the ability of these derivatives to induce inter- and intramolecular G-quadruplex structures by polyacrylamide gel electrophoresis (PAGE) and to inhibit telomerase in a modified TRAP assay. The two properties appear to be satisfactorily correlated and they show that the number and distances of positive charges in the side chains dramatically influence both these features. Although our previous studies on perylene derivatives with mono-positively charged side chains indicated that self assembly in aqueous solution leads to a major efficiency, the result observed with the spermine derivative suggests that a too strong aggregation is unfavourable, because it determines a lower solubility of the compounds. (C) 2007 Elsevier Ltd. All rights reserved.
Aliphatic amino azides as key building blocks for efficient polyamine syntheses
摘要:
New routes to open-chain polyamines have been developed using aliphatic amino azides as common precursors for the construction of the carbon-nitrogen framework. These alpha,omega-diaminoalkane synthetic equivalents were combined with (omega-halogenoalkyl)dichloroboranes to extend the polyamine chain from the azido moiety. An extension from the free amino group can also be achieved via a Michael type addition with acrylonitrile or a reductive amination with a gamma-azido ketone. Further transformations led to a large variety of regioselectively C- or (and) N-substituted polyamines.
[EN] NITRIC OXIDE-RELEASING ANTIBACTERIAL POLYMERS AND SCAFFOLDS FABRICATED THEREFROM AND METHODS PERTAINING THERETO<br/>[FR] POLYMÈRES ANTIBACTÉRIENS LIBÉRANT DE L'OXYDE NITRIQUE ET ÉCHAFAUDAGES FABRIQUÉS À PARTIR DE CEUX-CI ET PROCÉDÉS S'Y RAPPORTANT
申请人:UNIV NORTH CAROLINA CHAPEL HILL
公开号:WO2020139857A1
公开(公告)日:2020-07-02
Several embodiments of NO releasing structures are disclosed. In some embodiments, the structures are covalently modified to store and release nitric oxide. Some embodiments pertain to methods of making and use of these structures. The covalently modified polymer structures may be tailored to release nitric oxide in a controlled manner and are useful for treatment of various medical conditions.
Aliphatic amino azides as key building blocks for efficient polyamine syntheses
作者:Bertrand Carboni、Aziza Benalil、Michel Vaultier
DOI:10.1021/jo00066a028
日期:1993.7
New routes to open-chain polyamines have been developed using aliphatic amino azides as common precursors for the construction of the carbon-nitrogen framework. These alpha,omega-diaminoalkane synthetic equivalents were combined with (omega-halogenoalkyl)dichloroboranes to extend the polyamine chain from the azido moiety. An extension from the free amino group can also be achieved via a Michael type addition with acrylonitrile or a reductive amination with a gamma-azido ketone. Further transformations led to a large variety of regioselectively C- or (and) N-substituted polyamines.
The number and distances of positive charges of polyamine side chains in a series of perylene diimides significantly influence their ability to induce G-quadruplex structures and inhibit human telomerase
作者:Marco Franceschin、Caterina Maria Lombardo、Emanuela Pascucci、Danilo D’Ambrosio、Emanuela Micheli、Armandodoriano Bianco、Giancarlo Ortaggi、Maria Savino
DOI:10.1016/j.bmc.2007.11.065
日期:2008.3
We have synthesized eight polyamine perylene diimides to conjugate the efficiency of perylene derivatives in stabilizing G-quadruplex structures and the polyamines' biological activity, due to specific interactions with different DNA domains. Our study was carried out by investigating the ability of these derivatives to induce inter- and intramolecular G-quadruplex structures by polyacrylamide gel electrophoresis (PAGE) and to inhibit telomerase in a modified TRAP assay. The two properties appear to be satisfactorily correlated and they show that the number and distances of positive charges in the side chains dramatically influence both these features. Although our previous studies on perylene derivatives with mono-positively charged side chains indicated that self assembly in aqueous solution leads to a major efficiency, the result observed with the spermine derivative suggests that a too strong aggregation is unfavourable, because it determines a lower solubility of the compounds. (C) 2007 Elsevier Ltd. All rights reserved.