77020-28-1

Upstream product

• 100-61-8 N-methylaniline 
• 38326-49-7 ethyl 9-bromo-6-methyl-4-oxo-6,7,8,9-tetrahydro-4H-pyrido<1,2-a>pyrimidine-3-carboxylate 
• 71222-72-5 ethyl 9-(N-methyl-N-phenylamine)-6-methyl-4-oxo-6,7,8,9-tetrahydro-4H-pyrido<1,2-a>pyrimidine-3-carboxylate 
• 71222-65-6 ethyl 9-(methylphenylamino)-6-methyl-4-oxo-6,7-dihydro-4H-pyrido<1,2-a>pyrimidine-3-carboxylate 

Relevant academic research and scientific papers

Process for the preparation of nitrogen-bridgehead condensed pyrimidine compounds, and pharmaceutical compositions containing them

A process is disclosed for the preparation of compounds of the formula (I) STR1 wherein R1 and R2 are each hydrogen or lower alkyl; R3 is carboxy, lower alkoxycarbonyl, carbamoyl, carbamoyl substituted by one or two lower

Nitrogen Bridgehead Compounds. 38. New Antiallergic 4H-Pyridopyrimidin-4-ones. 3

The weak antiallergic activity of 6-methyl-4-oxo-6,7,8,9-tetrahydro-4H-pyridopyrimidine-3-carboxylic acid (4) on the rat reaginic passive cutaneous anaphylaxis test was enhanced by the introduction of appropriate functional groups into position 9 o