223393-69-9Relevant academic research and scientific papers
One-pot Synthesis of Novel 2,8-dithioxopyrano[2,3-d:6,5-d′]dipyrimidine-4,6(1H)-dione Catalyzed by p-Toluenesulfonic Acid
Mahmoodi,Sharifzadeh,Mamaghani,Tabatabaeian,Shoja
, p. 1646 - 1650 (2016)
Novel 2,8-dithioxopyrano[2,3-d:6,5-d′]dipyrimidine-4,6(1H)-dione derivatives were synthesized by a clean and efficient methodologies involving one-pot regioselective and chemoselective reactions between two moles substituted thiobarbituric acid and 1 mol various aromatic aldehydes in the presence of p-toluenesulfonic acid as a catalyst in EtOH with good yields in compression with alternative conditions such as microwave and promoted ultrasound. All of the compounds have been characterized by IR,1H NMR,13C NMR spectral data, and elemental analyses.
SUBSTANCE WHICH EXHIBITS ANTIVIRAL AND ANTIBACTERIAL ACTIVITY AND IS BASED ON DERIVATIVES OF 2,8-DITHIOXO-1H-PYRANO 2,3D&cedi l;6,5-D DIPYRIMIDYNE AND 10-AZA-ANALOGUE THEREOF
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Page/Page column 8-9, (2008/06/13)
The inventive substance which exibits antiviral and antibacterial activity is based on derivatives of 2,8-dithioxo-1H-pyrano[2,3-d; 6,5-d']dipyrimidine and 10-aza-analogue, differs in that comprises the derivative of said group of general formula A1 * M:
Azoles and Azines: CVII. Synthesis of 5H-Pyrano[2,3-d:6,5-d′]-dipyrimidine-2,4,6,8(1H,3H,7H,9H)-tetraones and Their2,8-Dithio Analogs
Moskvin,Polkovnikova,Ivin
, p. 1300 - 1305 (2007/10/03)
5H-Pyrano[2,3-d:6,5-d′]dipyrimidine-2,4,6,8(1H,3H,7H,9H)-tetraones have been synthesized by treatment with a POCl3-P2O5 mixture of pyridinium salts of 5,5′-arylmethylenebisbarbituric acids or by condensation of 6-methoxyur
