141266-44-6Relevant articles and documents
Complete chemical shift assignment and molecular modeling studies of two chromene derivatives as potential leads for new anticancer drugs
Almeida, Joyce Sobreiro Francisco Diz de,Ferreira Neto, Denise Cristian,Figueroa-Villar, José Daniel,Fran?a, Tanos Celmar Costa,Goncalves, Arlan da Silva,Rubim de Santana, Priscila Ivo
, p. 1 - 11 (2020)
The compounds 7-chloro-9-(2-hydroxy-4,4-dimethyl-6-oxocyclohex-1-en-1-yl)-3,3-dimethyl-2,3,4,9-tetrahydro-1H-xanthen-1-one (5) and 5-[-7-chloro-2,4-dioxo-1H, 2H, 3H, 4H, 5H-chromeno[2,3-d]pyrimidin-5-yl)]-1,3-diazinane-2,4,6-trione (7), were synthesized from dimedone and barbituric acid and had their three-dimensional structures and precise chemical shifts assignments obtained by Nuclear Magnetic Resonance (NMR) from 1H, 13C, APT, COSY, HSQC, and HMBC spectra. Additional HOMO-LUMO DFT calculations corroborated the NMR results and pointed to the most stable stereoisomers of each compound. Besides, further docking and molecular dynamic studies suggest that the stereoisomers (9S)-7-chloro-9-(2-hydroxy-4,4-dimethyl-6-oxocyclohex-1-en-1-yl)-3,3-dimethyl-2,3,4,9-tetrahydro-1H-xanthen-1-one, and 5-[(5S)-7-chloro-2,4-dioxo-1H, 2H, 3H, 4H, 5H-chromeno[2,3-d]pyrimidin-5-yl)]-1,3-diazinane-2,4,6-trione of these compounds may act as DNA intercalators and qualify as potential leads for the development of new anticancer drugs. Communicated by Ramaswamy H. Sarma.
Synthesis of oxadeazaflavines from barbituric acid and aromatic aldehydes
Figueroa-Villar,Rangel Cruz,Dos Santos
, p. 1159 - 1164 (1992)
2H-Chromeno[2,3-d]-pyrimidine-2,4(3H)-diones were prepared directly from barbituric acid and salicylaldehydes or by thermal cyclization of the condensation product of barbituric acid and 6-bromopiperonal.
A simple approach towards the synthesis of oxadeazaflavines
Figueroa-Villar,Cruz
, p. 2855 - 2862 (1993)
The synthesis of oxadeazaflavine (2H-chromeno[2,3-d]pyrimidine-2,4(3H)-dione) derivatives (1a, 1b and 1c) from barbituric acid and salicylaldehydes as starting materials was shown to be possible using water as solvent at room temperature. The orange inter
Nuclear magnetic resonance and molecular modeling study of exocyclic carbon-carbon double bond polarization in benzylidene barbiturates
Figueroa-Villar, J. Daniel,Vieira, Andreia A.
, p. 310 - 317 (2013/03/13)
Benzylidene barbiturates are important materials for the synthesis of heterocyclic compounds with potential for the development of new drugs. The reactivity of benzylidene barbiturates is mainly controlled by their exocyclic carbon-carbon double bond. In this work, the exocyclic double bond polarization was estimated experimentally by NMR and correlated with the Hammett σ values of the aromatic ring substituents and the molecular modeling calculated atomic charge difference. It is demonstrated that carbon chemical shift differences and NBO charge differences can be used to predict their reactivity.
Synthesis and in vitro antibacterial activities of 5-(2,3,4,5-Tetrahydro- 1H-chromeno[2,3-d]pyrimidin-5-yl)pyrimidione derivatives
Cheng, Qingfang,Wang, Qifa,Tan, Ting,Wang, Mingxiao,Chen, Na
experimental part, p. 386 - 390 (2012/05/04)
A series of novel 5-(2,3,4,5-tetrahydro-1H-chromeno[2,3-d]pyrimidin-5-yl) pyrimidione derivatives have been synthesized from substituted salicylaldehydes and barbituric acid or 2-thiobarbituric acid in water catalyzed by phase transfer catalysis of triethylbenzyl ammonium chloride (TEBA). Elemental analysis, IR, 1H NMR, and 13C NMR elucidated the structures of all the newly synthesized compounds. In vitro antimicrobial activities of synthesized compounds have been investigated against Escherichia coli, Bacillus subtilis, Staphylococcus aureus, and Pseudomonas aeruginosa. These newly synthesized derivatives exhibited significant in vitro antibacterial activity. A series of novel 5-(2,3,4,5-tetrahydro-1H-chromeno[2,3-d]pyrimidin- 5-yl)pyrimidione derivatives have been synthesized from substituted salicylaldehydes and barbituric acid or 2-thiobarbituric acid in water catalyzed by phase transfer catalysis of triethylbenzyl ammonium chloride (TEBA). Elemental analysis, IR, 1H NMR, and 13C NMR elucidated the structures of all the newly synthesized compounds. In vitro antimicrobial activities of synthesized compounds have been investigated against Escherichia coli, Bacillus subtilis, Staphylococcus aureus, and Pseudomonas aeruginosa. Copyright