Quinolone analogues 8 [1-6]. Synthesis of 3-aminopyridazino-[3,4-<i>b</i>]quinoxalin-4(l<i>H</i>)-one
作者:Yoshihisa Kurasawa、Ayaka Kawase、Jun Takizawa、Yuka Maesaki、Eisuke Kaji、Yoshihisa Okamoto、Ho Sik Kim
DOI:10.1002/jhet.5570420412
日期:2005.5
3-amino-1-methylpyridazino[3,4-b]quinoxalin-4(1H)-one 6 and N-(1,4-dihydro-1-methyl-4-oxopyridazino[3,4-b]quinoxalin-3-yl)carbamates 17a,b were synthesized from the 1,4-dihydro-1-methyl-4-oxopyridazino[3,4-b]quinoxa-line-3-carboxylate 1b via the 1,5-dihydro-4-hydroxy-1-methylpyridazino[3,4-b]quinoxaline-3-carbohydrazide 13b and then 1,4-dihydro-1-methyl-4-oxopyridazino[3,4-b]quinoxaline-3-carboxazide
3-氨基-1-甲基吡啶并[3,4- b ]喹喔啉-4(1 H)-one 6和N-(1,4-二氢-1-甲基-4-氧并哒嗪[3,4- b ]喹喔啉-3-基)氨基甲酸酯17a,b是由1,4-二氢-1-甲基-4-氧代哒嗪并[3,4- b ]喹喔啉--3-羧酸酯1b 经1,5-二氢-4合成的。 -羟基-1-甲基哒嗪并[3,4- b ]喹喔啉-3-碳酰肼13B,然后1,4-二氢-1-甲基-4- oxopyridazino [3,4 b ]喹喔啉-3- carboxazide 8。加热化合物13b芳基醛得到1,4-二氢-1-甲基-4-氧代吡啶并[3,4- b ]喹喔啉-3-碳(2-芳基亚甲基)酰肼14a-d。