POLYCYCLIC N-HETERO COMPOUNDS. XXI. SYNTHESIS OF NOVEL RING SYSTEM, 4H-IMIDAZOPYRIMIDOBENZAZEPINE AS B-HOMO-6,11,13,15-TETRAAZASTEROIDAL ANALOGRUE

Article abstract of DOI:10.3987/R-1986-01-0143

A synthesis of 4Hh-imidazo<1',2':1,6>pyrimido<5,4-d>1>benzazepine (XIIIa) having a novel ring system is described.Methyl anthranilate (IVa) was converted to 4-(2-hydroxylethylamino)-6,7-dihydro-5H-pyrimido<5,4-d><1>benzazepine (XIIXa) in several steps and XIa was cyclized to XIIIa.A synthesis of 8-chloro derivatives of XIIIa is also described.