Dimethyl 5-Hydroxy-6-methylcinchomeronateからPyrido [3,4-d]-pyridazineおよびα-Styrylpyridazine誘導体の合成

抄録

Pyrido [3, 4-d] pyridazine derivatives were synthesized from dimethyl 5-hydroxy-6-methylcinchomeronate (I). 8-Hydroxy-7-methylpyrido [3, 4-d] pyridazine-1, 4-(2H, 3H)-dione (II) was found to produce a strong chemiluminescence and 8-methoxy-7-methyl-1, 4-dimorpholinopyrido [3, 4-d] pyridazine (IX) had a diuretic activity. α-Styrylpyridine and benzimidazoylpyridine derivatives were also prepared. Dimethyl 5-methoxy-6-styrylcinchomeronate (XVa) and dimethyl 6-(p-chlorostyryl)-5-methoxy-cinchomeronate (XVb) showed a fluorescent whitening action.