| 摘要 |
<p>The present invention relates to novel hydrodipyranophthalazine compounds of the formula: <IMAGE> wherein R1 = hydrogen or lower alkyl, R2 = hydrogen, chlorine or bromine, R3 = hydrogen or aralkyl if R2 = hydrogen, R3 = bromine or alkoxy if R2 = bromine, R3 = chlorine or alkoxy if R2 = chlorine, or <IMAGE> wherein R4 = hydrogen, halogen, trifluoromethyl, alkyl, alkoxyl, alkylenedioxy, a possibly substituted amino group, or a nitro group, THE 4,4'-BOND IS SATURATED OR UNSATURATED, AND ACID-ADDITION SALTS OF THESE COMPOUNDS.</p> |
