In this contribution, we describe the synthesis of bis- and tris(arylethylnyl)pyrimidine oligomers using Sonogashira, Negishi and Suzuki cross-coupling reactions and starting from chloro or iodopyrimidines. When the arms of such banana-shaped and star-shaped molecules are substituted by electron-donating groups, interesting fluorescence properties were observed. The influence of the nature of the electron-donating
Pyrimidine Derivatives with Terminal Pyridyl Heterocycles: Facile Synthesis and Their Antiproliferative Activities
作者:Khushwant Singh、Achintya Jana、Petra Lippmann、Ingo Ott、Neeladri Das
DOI:10.1002/jhet.3547
日期:2019.6
Incorporation of heterocyclic pyrimidine or pyridine motifs is common in the drug design for various therapeutic applications. Herein, we describe the facile synthesis of two molecules containing both pyrimidine and pyridine scaffolds. A variety of analytical techniques (multinuclear NMR, Fourier transform infrared, and mass spectrometry analyses) confirmed the purity of these molecules. In pristine
Isomeric platinum organometallics derived from pyrimidine, pyridazine or pyrazine and their potential as antitumor drugs
作者:Khushwant Singh、Achintya Jana、Petra Lippmann、Ingo Ott、Neeladri Das
DOI:10.1016/j.ica.2019.04.028
日期:2019.7
Two new organometallic compounds (1 and 2) containing multiple platinum(II) centers have been synthesized. 1 and 2 are structural isomers having the same molecular formula but they are different either in terms of the N-heterocycle present in the center or relative orientation of the two pendant arms bearing the alkynyl-Pt(PEt3)(2)I units. 1 and 2 have been characterized using FTIR, NMR, HAMS and elemental analyses, besides structural characterization of one of the complex (1) using single crystal XRD. The cytotoxic potential of 1 and 2 and a previously reported di-Pt-II organometallic molecule (3) have been studied against four cancer cell lines HT-29 (colon carcinoma), MCF-7, MDA-MB-231 (breast cancer) and SK-HEP-1 (human hepatic adenocarcinoma). Comparison of IC50 values suggests that these Pt(II) based organometallic compounds have antiproliferative activity that is comparable with that of cisplatin.