118969-90-7

Upstream product

• 52505-64-3 3-Amino-4-methyl-6-phenyl-thieno<2,3-b>pyridin-2-carbonsaeureethylester 
• 108-24-7 acetic anhydride 
• 141-43-5 ethanolamine 
• 58327-89-2 2,9-Dimethyl-7-phenylpyrido<3',2':4,5>thieno<3,2-d><1,3>oxazin-4-on 

Downstream Products

• 119004-47-6 6,8-Dimethyl-10-phenyl-3,4-dihydro-2H-pyrido<3',2':4,5>thieno<2,3-e>pyrimido<1,2-c>pyrimidin 
• 119004-45-4 5,7-Dimethyl-9-phenyl-2,3-dihydropyrido<3',2':4,5>thieno<2,3-e>imidazo<1,2-c>pyrimidin 
• 119004-46-5 3-(2-Chloro-ethyl)-2,9-dimethyl-7-phenyl-3H-pyrido[3',2':4,5]thieno[3,2-d]pyrimidin-4-one 

Relevant academic research and scientific papers

Surprising reaction of 3-(2-chloro-ethyl)pyrido[3',2':4,5]thieno[3,2-d]pyrimidinones with α,ω-diamino-alkanes to tetracyclic compounds with an anellated dihydroimidazo-, dihydropyrimido- or tetrahydro-1,3-diazepino-ring

Bis- and monoacylated compounds of structure B reacted with ω-hydroxyalkylamines to give the tricyclic 3-(ω-hydroxy-alkyl)pyrido[3',2':4,5]thieno[3,2-d] pyrimidin-4-(3 H)-ones. The title compounds were obtained by the reaction of the 3-(2-chloroethyl) der

Synthesis of N-(2-carboxy-thieno[2,3-b]pyridine-3-yl) amidines by the reaction of 4-oxo-4H-pyrido[3',2': 4,5]-thieno[3,2-d]1,3-oxazines with primary amines

The title compounds were synthesized by the reaction of tricyclic compounds of structure B with primary aliphatic amines under different conditions and useful isolation methods in good yields. These compounds showed an acceptable antianaphylactic activity.