2,3-diphenyl-6,7-dihydro-5H-1,4-diazepine

8,9,16,17,18,19-hexahydro-7H-dibenzo<1,4,8,12>tetra-azacyclopentadecine

1,4,5,6-四氢吡啶

六氢嘧啶

2-methyltetrahydropyrimidine