The synthesis of benzofuroquinolines. III. Two dihydroxybenzofuroquinolinones
作者:Seiji Yamaguchi、Yoshiteru Yoshimoto、Rikuko Murai、Fumihiko Masuda、Minora Yamada、Yoshiyuki Kawase
DOI:10.1002/jhet.5570210320
日期:1984.5
Two dihydroxybenzofuroquinolinones, 3,9-dihydroxy-5H-benzofuro[3,2-c]quinolin-6-one (V) and 3,8-dihydroxy-6H-benzofuro[2,3-b]quinolin-11-one (VI), were obtained by the demethyl-cyclization of 3-(2,4-dimethoxyphenyl)-4-hydroxy-7-methoxy-1H-quinolin-2-one (IV). By the methylation with diazomethane, V gave a dimethylated compound (VII), while VI gave a trimethylated compound (VIII).
两个二羟基苯并呋喃喹啉酮,3,9-二羟基-5 H-苯并呋喃[3,2 - c ]喹啉-6-一(V)和3,8-二羟基-6 H-苯并呋喃[2,3 - b ]喹啉-11-通过3-(2,4-二甲氧基苯基)-4-羟基-7-甲氧基-1H-喹啉-2-酮(IV)的脱甲基环化获得一种(VI )。通过用重氮甲烷甲基化,V得到二甲基化的化合物(VII),而VI得到三甲基化的化合物(VIII)。