189067-67-2

Upstream product

• 189067-63-8 ethyl 6-methyl-2-(3-phenylthioureido)-4,5,6,7-tetrahydrothieno[2,3-c]pyridine-3-carboxylate 
• 1248518-95-7 7-methyl-2-phenylamino-5,6,7,8-tetrahydropyrido[4',3':4,5]thieno[2,3-d][1,3]thiazin-4-one 

Downstream Products

• 1248519-03-0 7-methyl-3-phenyl-2-thioxo-1,2,6,7,8,9-hexahydro-3H-pyrido[4',3':4,5]thieno[2,3-d][1,2,4]triazolo[1,5-a]pyrimidin-10-one 
• 1248519-14-3 C₂₂H₂₅N₅O₃S 
• 1248518-99-1 7-methyl-2-phenylamino-3-(3-phenylthioureido)-5,6,7,8-tetrahydro-3H-pyrido[4',3':4,5]thieno[2,3-d]pyrimidin-4-one 
• 1248519-12-1 C₁₈H₁₉N₅O₂S 
• 1248519-13-2 7-methyl-2-phenylamino-3-(2-oxopropylamino)-5,6,7,8-tetrahydro-3H-pyrido[4',3':4,5]thieno[2,3-d]pyrimidin-4-one 
• 1248519-06-3 7-methyl-3-phenyl-6,7,8,9-tetrahydro-3H-pyrido[4',3':4,5]thieno[2,3-d][1,2,4]triazolo[1,5-a] pyrimidin-10-one 
• 1248519-08-5 7-methyl-3-phenyl-1,2,6,7,8,9-hexahydro-3H-pyrido[4',3':4,5]thieno[2,3-d][1,2,4]triazolo[1,5-a]pyrimidine-2,10-dione 
• 1248519-18-7 5-phenyl-2,4,9-trimethyl-8,9,10,11-tetrahydro-5H-pyrido[4'',3'':4',5']thieno[2',3':4,5]pyrimido[1,2-b][1,2,4]triazepin-12-one 
• 1248519-17-6 4-amino-9-methyl-12-oxo-5-phenyl-8,9,10,11-tetrahydro-5H-pyrido[4'',3'':4',5']thieno[2',3':4,5]pyrimido[1,2-b][1,2,4]triazepine-3-carbonitrile 
• 1248519-15-4 C₂₁H₂₃N₅O₄S 
• 1248519-16-5 ethyl 4-amino-9-methyl-12-oxo-5-phenyl-8,9,10,11-tetrahydro-5H-pyrido[4'',3'':4',5']thieno[2',3':4,5]pyrimido[1,2-b][1,2,4]triazepine-3-carboxylate 

Relevant academic research and scientific papers

Pyridine-based heterocycles. Synthesis of new pyrido [4',3':4,5]thieno[2,3- d]pyrimidines and related heterocycles

The synthesis of the title compounds was achieved using ethyl 2-amino-6methyl-4,5,6,7-tetrahydrothieno[2,3-c]pyridine-3-carboxylate (1) as starting material. The reaction of the amino ester 1 with phenylisothiocyanate in boiling ethanol afforded the thiou