Reactions of 3-acylchromones with dimethyl 1,3-acetonedicarboxylate and 1,3-diphenylacetone: one-pot synthesis of functionalized 2-hydroxybenzophenones, 6H-benzo[c]chromenes and benzo[c]coumarins
作者:Viktor O. Iaroshenko、Iryna Savych、Alexander Villinger、Vyacheslav Ya. Sosnovskikh、Peter Langer
DOI:10.1039/c2ob07020k
日期:——
Reactions of 3-methoxalyl-, 3-polyfluoroacyl- and 3-aroylchromones with dimethyl 1,3-acetonedicarboxylate and 1,3-diphenylacetone in the presence of DBU proceed at the C-2 atom of the chromone system with pyrone ring-opening and subsequent formal [3 + 3] cyclocondensation to functionalized 2-hydroxybenzophenones, 6H-benzo[c]chromenes and benzo[c]coumarins, depending on the substituent at the 3-position. An NMR study and X-ray crystallographic analysis are reported. The compounds synthesized can be considered as promising scaffolds for the design of the novel UV-A/B and UV-B filters.
Reactions of 3-Acylchromones with Heterocyclic Ketene Aminals: One-Pot Synthesis and Phosphatase Inhibitory Activity of Fused Pyridine Derivatives
作者:Iryna Savych、Syeda Abida Ejaz、Syed Jawad Ali Shah、Viktor O. Iaroshenko、Alexander Villinger、Vyacheslav Ya. Sosnovskikh、Jamshed Iqbal、Afshin Abbasi、Peter Langer
DOI:10.1002/ejoc.201601138
日期:2017.1.3
Domino reactions of 3-acylchromones, namely 3-methoxalyl-, 3-aroyl- and 3-cinnamoylchromones, with heterocyclicketeneaminals (HKAs) proceed by attack of the nucleophile on the C-2 atom of the chromone moiety, pyrone ring-opening and subsequent formal [3+3] cyclocondensation with formation of functionalized tetracyclic fused chromeno[2,3-b]pyridines or 2H,3H-imidazo[1,2-a]pyridines. The product distribution
Transcription factor modulating compounds and methods of use thereof
申请人:Levy Stuart B.
公开号:US20090131401A1
公开(公告)日:2009-05-21
Substituted benzoimidazole compounds useful as anti-infectives that decrease resistance, virulence, or growth of microbes are provided. Methods of making and using substituted benzoimidazole compounds, as well as pharmaceutical preparations thereof, in, e.g., reducing antibiotic resistance and inhibiting biofilms.
TRANSCRIPTION FACTOR MODULATING COMPOUNDS AND METHODS OF USE THEREOF
申请人:LEVY Stuart B.
公开号:US20110230523A1
公开(公告)日:2011-09-22
Substituted benzoimidazole compounds useful as anti-infectives that decrease resistance, virulence, or growth of microbes are provided. Methods of making and using substituted benzoimidazole compounds, as well as pharmaceutical preparations thereof, in, e.g., reducing antibiotic resistance and inhibiting biofilms.