Application of Biginelli reaction to the synthesis of ferrocenylpyrimidones and [3]-ferrocenophane-containing pyrimido[4,5-d]pyrimidinediones
摘要:
A series of ferrocene-containing mono- and bis-dihydropyrimidines (DHP's) were prepared by boric acid mediated three-component Biginelli reactions of formyl- and 1,1'-diformylferrocene, 1,3-dioxo-components and urea. A few further transformations including hydrogenolysis of a benzyl 4-ferrocenyl-DHP-5-carboxylate were also performed. Novel cis-fused saturated pyrimido[4,5-d]pyrimidine-2,7(1H, 3H)-diones incorporating [3]-ferrocenophane moiety were constructed by means of iron(III)-catalyzed Biginelli-like condensations of 1,1'-diformylferrocene with urea and in situ generated methyl ketone-derived silyl enol ethers. The structures of the new compounds were established by IR and NMR spectroscopy, including HMQC, HMBC and DEPT measurements. (C) 2009 Elsevier B. V. All rights reserved.
Impact of the ferrocenyl group on cytotoxicity and KSP inhibitory activity of ferrocenyl monastrol conjugates
作者:Anna Wieczorek-Błauż、Karolina Kowalczyk、Andrzej Błauż、Anna Makal、Sylwia Pawlędzio、Chatchakorn Eurtivong、Homayon J. Arabshahi、Jóhannes Reynisson、Christian G. Hartinger、Błażej Rychlik、Damian Plażuk
DOI:10.1039/d1dt03553c
日期:——
strategy, we designed ferrocenyl analogs of monastrol – the first low molecular weight kinesinspindleprotein (KSP) inhibitor. The obtained compounds showed low micromolar antiproliferative activity towards a panel of sensitive and ABC-overexpressing cancer cells. Most cytotoxic compounds exhibited also higher KSP modulatory activity and ability for ROS generation compared to monastrol. The increased
Indium(III) halides (chloride and bromide) catalyse the three-component Biginelli coupling of ferrocenyl-1,3-diketones, aldehydes and urea (or thiourea) to give 5-ferrocenoyl-3,4-dihydropyrimidinones. 4-Ferrocenyl-3,4-dihydropyrimidinones were obtained from alkyl-acetoacetates, formylferrocene and urea. The tricyclic compound, 13-ferrocenecarbonyl-9-methyl-11-oxo-8-oxa-10,12-diazatricyclo [7.3.1.0(2.7)] trideca-2,4-6-triene, was synthesized from 1-ferrocenyl-1,3-butanedione, salicilaldehyde and urea. (C) 2003 Elsevier Science B.V. All rights reserved.