Tricyclic 3-(2H)-pyridazinone derivatives. Synthesis and evaluation of their antisecretory and antiulcer activity
摘要:
A new series of benzopyranopyridazinones (1b-e) either unsubstituted at the amide nitrogen or substituted by an alkyl thiourea, as well as two benzocinnolinone derivatives (2b, f) have been synthesized and tested for their antiulcer and antisecretory activity. All the test compounds showed statistically significant antiulcer properties in the EtOH model, 1b being the most active. On the contrary, in die ASA model only 1b and 1d were found weakly active. In the pylorus-ligated rat model, 1b and 1e displayed significant antisecretory activity, though only 1b proved to be able to reduce the acidity of the gastric secretion.
Tricyclic 3-(2H)-pyridazinone derivatives. Synthesis and evaluation of their antisecretory and antiulcer activity
摘要:
A new series of benzopyranopyridazinones (1b-e) either unsubstituted at the amide nitrogen or substituted by an alkyl thiourea, as well as two benzocinnolinone derivatives (2b, f) have been synthesized and tested for their antiulcer and antisecretory activity. All the test compounds showed statistically significant antiulcer properties in the EtOH model, 1b being the most active. On the contrary, in die ASA model only 1b and 1d were found weakly active. In the pylorus-ligated rat model, 1b and 1e displayed significant antisecretory activity, though only 1b proved to be able to reduce the acidity of the gastric secretion.
Unexpected behaviour of the oxidizing agent sodium<i>m</i>-nitrobenzenesulfonate: Synthesis of a new class of 5-hydroxy benzopyrano-[4,3-<i>c</i>]pyridazin-3(2<i>H</i>)-ones
作者:Giorgio Cignarella、Daniela Barlocco
DOI:10.1002/jhet.5570320114
日期:1995.1
m-nitrobenzene sulfonate, widely used in dehydrogenation of 4,5-dihydro-3(2H)-pyridazinones to their corresponding aromatic derivatives, behaves in an unexpected way when 4,4a-dihydro-5H[1]benzopyrano[4,3-c]pyridazin-3(2H)-ones are employed as substrate. The synthesis of a newclass of 5-hydroxy[1]benzopyrano[4,3-c]pyridazin-3(2H)-ones is described.
钠米-硝基苯磺酸酯,广泛用于4,5-二氢-3-(2-脱氢ħ) -哒嗪酮为它们相应的芳族衍生物,以意想不到的方式的行为时-4,4a-二氢5 ħ [1]苯并吡喃并[4 ,3 - c ]哒嗪-3(2 H)-1被用作底物。描述了新型的5-羟基[1]苯并吡喃并[4,3 - c ]哒嗪-3(2 H)-ones的合成。