138768-75-9Relevant articles and documents
Polycyclic N-hetero compounds. XLII: Convenient syntheses of 6,7-dihydro-5H-pyrido[2,3-b]pyrimido[4,5-d]azepine as a novel polyheterocyclic ring system and its 4-substituted derivatives
Nagamatsu,Hantani,Takaishi,Sasaki,Hirota
, p. 942 - 946 (1991)
A convenient synthetic route for the syntheses of 6,7-dihydro-5H-pyrido[2,3-6]pyrimido[4,5-d]azepine and its 4-substituted derivatives starting from ethyl 2-aminopyridine-3-carboxylate is described as the fist example of the unknown ring system. A new cla