Heterocyclic syntheses with allene-1,3-dicarboxylic esters and acids : new chromene, chromone, quinolone, α-pyrone and coumarin syntheses
作者:Neil S. Nixon、Feodor Scheinmann、John L. Suschitzky
DOI:10.1016/s0040-4039(00)81474-4
日期:1983.1
Allene l,3-dicarboxylic esters and acids have been converted into chromenes, chromones, on a-pyrone and a coumarin by reactions with phenols and to quinolones by reaction with aniline derivatives. A novel chromene → coumarine rearrangement is also reported.
Synthesis and antiproliferative activity of hybrid thiosemicarbazone derivatives bearing coumarin and d-galactose moieties with EGFR inhibitory activity and molecular docking study
作者:Vu Ngoc Toan、Nguyen Dinh Thanh
DOI:10.1007/s00044-021-02773-y
日期:2021.10
6-tetra-O-acetyl-β-d-galactopyranosyl)thiosemicarbazones 5a–5j of substituted 3-acetylcoumarins were synthesized with yields of 45–68%. All synthesized thiosemicarbazones were evaluated for cytotoxic activity against several cancer cell lines, such as human breast adenocarcinoma cells MCF7, human liver cancer cells HepG2, human cervical cancer cells HeLa, human melanoma cancer cells SK-Mel-2, and human
A Benzannulation Strategy for Rapid Access to Quinazoline-2,4-diones via Oxidative N-Heterocyclic Carbene Catalysis
作者:Arghya Ghosh、Sayan Shee、Akkattu T. Biju
DOI:10.1021/acs.orglett.2c00954
日期:2022.4.15
benzannulation of enals with suitably substituted pyrimidine-2,4-diones allowing the mild and facilesynthesis of functionalized quinazoline-2,4-diones is presented. This oxidative transformation proceeds via the simultaneous generation of dienolates and α,β-unsaturated acylazoliums and follows a vinylogous Michael/aldol/β-lactonization/decarboxylation/oxidation sequence to afford quinazoline-2,4-diones