abstract |
3-HALO-1,2,8,9-TETRAAZAPHENALENES OPTIONALLY SUBSTITUTED IN THE 4, 5, 6, 7 AND/OR 9 POSITIONS AND THEIR SALTS ARE INTERMEDIATES FOR THE PREPARATION OF THE CORRESPONDING 3-AMINO-1,2,8,9-TETRAAZAPHENALENES WHICH ARE CARDIOVASCULAR AGENTS. REPRESENTATIVE EMBODIMENTS ARE 3-CHLORO1,2,8,9-TETRAAZAPHENALENE AND 3-BROMO-9-METHYL-1,2,8,9TETRAAZAPHENALENE. |