Synthesis of 4-substituted 1,2-dihydropyridazino(3,4-b)quinoxalines from 3-(N,N-dimethylaminocarbonyl)furo(2,3-b)quinoxaline.
作者:YOSHIHISA KURASAWA、ATSUSHI TAKADA
DOI:10.1248/cpb.28.3537
日期:——
4-Substituted 1, 2-dihydropyridazino [3, 4-b] quinoxalines (VII, VIIIa, and VIIIb) were synthesized from 3-(N, N-dimethylaminocarbonyl) furo [2, 3-b] quinoxaline hydrochloride (I) via 3-oxo-2-(2'H-pyrido [1', 2'-a] pyrimidin-2'-on-3'-yl)-3, 4-dihydroquinoxaline (III) and 3-chloro-2-(2'H-pyrido [1', 2'-a] pyrimidin-2'-on-3'-yl) quinoxaline (V).
4-取代的 1,2-二氢哒嗪基 [3,4-b] 喹喔啉(VII,VIIIa 和 VIIIb)由 3-(N,N-二甲基氨基羰基) 呋喃 [2、3-b]喹喔啉盐酸盐(I)通过 3-氧代-2-(2'H-吡啶并[1',2'-a]嘧啶-2'-酮-3'-基)-3,4-二氢喹喔啉(III)和 3-氯代-2-(2'H-吡啶并[1',2'-a]嘧啶-2'-酮-3'-基)喹喔啉(V)合成。