The 1,3-diaryltriazenido(p-cymene)ruthenium(II) complexes with a high in vitro anticancer activity
摘要:
1,3-Diatyltriazenes (1) were let to react with [RuCl2(p-cymene)](2) in the presence of trimethylamine to give neutral 1,3-diatyltriazenido(p-cymene)ruthenium(11) complexes, [RuCl(p-cymene)(ArNNNAr)] (2). The molecular composition of the products 2 was confirmed by NMR spectroscopy and mass spectrometry. The structures of the selected complexes were confirmed by a single crystal X-ray analysis. All triazenido-ruthenium complexes were highly cytotoxic against human cervical carcinoma HeLa cells with IC50 below 6 mu M, as determined by a spectrophotometric MTT (3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyl-tetrazolium bromide) method. The most active was [RuCl(p-cymene)(ArNNNAr)] (Ar = 4-Cl-3-(CF3)-C6H3) (2g) with IC50 of 0.103 +/- 0.006 mu M. In comparison with the data for the non-coordinated triazenes 1, the triazenido-ruthenium complexes 2 exhibited up to 560-times higher activity. Three selected complexes were highly cytotoxic also against several tumor cell lines: laryngeal carcinoma HEp-2 cells and their drug-resistant HEp-2 subline (7 T), colorectal carcinoma HCT-116 cells, lung adenocarcinoma H460 cells, and mammary carcinoma MDA-MB-435 cells. The compounds 2g and [RuCl(p-cymene)(ArNNNAr)] (Ar = 4-I-C6H4) (2j) were similarly cytotoxic against parental and drug-resistant cells. Time and dose dependent accumulation of the cells in the S phase of the cell cycle was induced by the compound 2g, triggering apoptosis. Our preliminary results indicate triazenido-ruthenium complexes as promising anticancer drug candidates. (C) 2015 Elsevier Inc. All rights reserved.
[EN] NITROSATION REAGENTS AND METHODS<br/>[FR] RÉACTIFS ET PROCÉDÉS DE NITROSATION
申请人:UNIV CALIFORNIA
公开号:WO2021257849A1
公开(公告)日:2021-12-23
Provided are compounds that can find use as nitrosation reagents. Provided are nitrosation methods that include reacting a substrate with one of the provided nitrosation reagents and thereby generating a nitrosation product. Provided are kits including a nitrosation reagent. Provided are compositions wherein the nitrosation reagent is enriched in the 15N isotope.
Synthesis of 1,3-Diaryltriazenes and Azo Dyes from Aryl Amines Using N-Nitrososulfonamides
作者:Ryan D. Baxter、Mahshid Yaghoubi
DOI:10.1055/a-1969-4050
日期:——
New methods for the synthesis of 1,3-diaryltriazenes and azo dyes from arylamines are reported. Both methods involve the formation of aryl diazonium intermediates via the transnitrosation of arylamines with N-nitrososulfonamides. Each two-step transformation may be performed in one reaction vessel at room temperature with no precautions taken to exclude air or moisture. Several triazene and azo dye