831206-55-4

Upstream product

• 708291-49-0 2-propyl-8,8-dimethyl-7,10-dihydro-4H,8H-pyrano[3,4:5',6']pyrido[3',2':4,5]thieno[3,2-d][1,3]-oxazin-4-one 
• 60-15-1 2-amino-1-phenylpropane 
• 166545-84-2 3-amino-7,7-dimethyl-7,8-dihydro-5H-pyrano<4,3-e>thieno<2,3-b>pyridine-2-carboxylic acid 
• 200959-66-6 ethyl 3-amino-7,7-dimethyl-7,8-dihydro-5H-pyrano[4,3-b]thieno[3,2-e]pyridine-2 carboxylate 

Relevant academic research and scientific papers

Synthesis of new condensed derivatives of pyrano[4,3-b]thieno[3,2-e] pyridine and pyrido[3′,2′:4,5]thieno[3,2-d]pyrimidine

The reactions of 2-methyl (propyl) substituted 8,8-dimethyl-7,10-dihydro- 4H,8H-pyrano[3″,4″:5′,6′]pyrido[3′,2′:4,5] thieno[3,2-d][1,3]oxazines with primary amines give 2-methyl (propyl) substituted 8,8-di- methyl-7,10-dihydro-8H-pyrano[3″,4″:5′, 6′]pyrido[3′,2′:4,5]thieno[3,2-d][1,3]pyrimidin-4(3H)-ones or 3-acetyl-N-alkyl- and N-alkyl-3-butyrylamino-7,7-dimethyl-7,8-dihydro-5H- pyrano[4,3-b]thieno[3,2-e]- pyridine-2-carboxamides depending on steric hindrance in the amines.