2,4,8-trisubstituted-3H-6H-1,4,5A,8A-tetraazaacenaphthylene-3,5-(4H)-diones.

摘要

Compounds of formula <CHEM> wherein R1 is hydrogen, alkyl, carboxamidomethyl, 4-chlorophenyl, benzyl and (4-nitrophenyl)-methyl; R2 and R3 are hydrogen or alkyl, R4 is 3-pyridinyl or <CHEM> where R6 and R7 are hydrogen, halogen, alkyl, alkoxy, N-alkyl-N-acylamino, nitro, and trifluoromethyl and where halogen is selected from chlorine, fluorine, bromine and iodine; R5 is hydrogen or alkyl; and A-B is -C=C-R3- or <CHEM> which are useful antihypertensive and anxiolytic agents. c