| 摘要 |
Pyridazo(1,2-a)(1,2)diazepine, pyridazo(1,2-a)(1,2)diazocine or pyridazo(1,2-1) (1,2,5)triazocine derivs. of formula (I) and their salts are new. R1 = H, alkanoyl or aroyl; R2 = H or alkyl; R3 = H or aryl; R4 and R5 = H, or R4+R5=O; Y = CH2, CH2CH2 or NR6; R6 = H, alkyl or aralkyl. |
