Synthesis and properties of bifunctional chloroalkyl nitrosamines with an intercalating moiety
摘要:
Three N-nitroso-N-(arylcarbonyloxymethyl)-3-chloropropylamines were synthesized, and their chemical and biological properties were studied. All arylcarboxylates intercalated with double-stranded DNA, and their mutagenicity and DNA cross-linking activity were affected by their ring structure. The DNA interstrand cross-link formation increased dose dependently after treatment with the acridine analog. The anthraquinone analog showed the highest bacterial mutagenicity among the three nitrosamines in Salmonella typhimurium TA100, while in Salmonella typhimurium TA92, which can detect cross-linking agents, the acridine analog showed the highest mutagenicity. This agreed with the result of a cross-linking assay. These results suggest that the three-ring aromatic moiety gives DNA-intercalating ability to cross-linkable chloropropyl nitrosamine, and the acridine analog is considered as a possible new antitumor lead compound. (C) 2004 Elsevier Ltd. All rights reserved.
[EN] SILYL ALKYL ESTERS OF ANTHRACENE- AND PHENANTHRENE CARBOXYLIC ACIDS<br/>[FR] ESTERS ALKYLIQUES SILYLES D'ACIDES ANTHRACENE ET PHENANTHRENE-CARBOXYLIQUES
申请人:HONEYWELL SPECIALTY CHEMICALS
公开号:WO2004000853A1
公开(公告)日:2003-12-31
The invention relates to silyl alkyl esters, in particular of anthracene and phenanthrene carboxylic acids, a process for their preparation, compositions and polysiloxane compositions which contain the silyl alkyl esters and which can be used in particular in the semiconductor industry for the preparation of anti-reflective layers for photolithographic applications.
作者:Valentina V. Utochnikova、Alena S. Kalyakina、Ivan S. Bushmarinov、Andrey A. Vashchenko、Lukasz Marciniak、Anna M. Kaczmarek、Rik Van Deun、Stefan Bräse、Natalia P. Kuzmina
DOI:10.1039/c6tc03586h
日期:——
Searching for new NIR emitting materials, lanthanide 9-anthracenates Ln(ant)3 were synthesized and thoroughly characterized. Ytterbium 9-anthracenate Yb(ant)3, that demonstrated the highest NIR luminescence efficiency, was successfully used as an emission layer of a host-free OLED and its electroluminescence quantum efficiency, corresponding to the sole band at 1000 nm, reached 0.21%. This performance
Two-dimensional thallium(I) supramolecular polymer constructed from Tl⋯π interactions: A new precursor for the preparation of thallium(III) oxide with a nano-structural surface
作者:Kamran Akhbari、Ali Morsali
DOI:10.1016/j.poly.2011.02.021
日期:2011.5
A new two-dimensional thallium(I) supramolecular polymer, [Tl-2(mu(3)-9-Ac)(mu(4)-9-Ac)(H2O)](n) (1) [9-HAc = 9-anthracene carboxylic acid]. has been synthesized and characterized. The single-crystal X-ray data of compound 1 shows two types of Tl-1 ions with coordination numbers of four and five. The thallium atoms have irregular coordination spheres, containing a stereo-chemically active lone pair with eta(5) Tl center dot center dot center dot C interactions in the vacant coordination sphere of the Tl-1 ions, thus attaining total hapticities of 9 and 10 with O(5)Tl1 center dot center dot center dot C-5 and O(4)Tl2 center dot center dot center dot C-5 environments and Tl center dot center dot center dot pi((centroid)) distances of 3.308 and 3.251 angstrom, respectively. The thermal stability of 1 was studied by thermo gravimetric (TG) and differential thermal analyses (DTA). Different morphologies of thallium(III) oxide with a nano-structural surface were prepared from compound 1 powders and compound 1 micro-rods. These nano-structures were characterized by X-ray powder diffraction (XRD) and scanning electron microscopy (SEM). (C) 2011 Elsevier Ltd. All rights reserved.