作者:Bruno Simoneau、Paul Brassard
DOI:10.1016/s0040-4020(01)85881-6
日期:1988.1
A general and regiospecific method for the preparation of quinizarins involves the cycloaddition of electron-rich dienes. Advantageous syntheses of several natural products, 2-methylquinizarin, islandicin, digitopurpone, erythroglaucin, 5-0-methylislandicin and 8-0-methyl-digitopurpone illustrate this procedure. A structure attributed to ventinone B is incorrect and 1,4,8-trihydroxy-6-methylanthraquinone
制备喹唑啉的一般方法和区域特异性方法涉及富电子二烯的环加成。几种天然产物的有利合成,例如2-甲基奎尼嗪,岛菌素,数字扑通p,赤藓红霉素,5-0-甲基岛兰霉素和8-0-甲基数字o通。归因于维替农酮B的结构不正确,并且1,4,8-三羟基-6-甲基蒽醌与所描述的天然物质不同。