Synthesis of new chromeno[4,3,2-<i>de</i>]quinazolin-2-ones, -quinazolines and -pyrrolo[2,1-<i>b</i>]quinazolines
作者:Carlos M. Martínez-Viturro、Domingo Domínguez
DOI:10.1002/jhet.5570440510
日期:2007.9
The total synthesis of chromeno[4,3,2-de]quinazolin-2-ones, -quinazolines and -pyrrolo[2,1-b]quinazolines from easily prepared 4-methoxy-1-nitro-9H-xanthen-9-one is reported. These compounds, in which a 1,3-diazine ring is fused to the xanthene scaffold, were obtained with good overall yields in very few steps.
由易于制备的4-甲氧基-1-硝基-9 H-黄嘌呤-9合成色酚[4,3,2- de ]喹唑啉-2-酮,-喹唑啉和-吡咯并[2,1- b ]喹唑啉-报告一个。这些化合物,其中1,3-二嗪环与the吨骨架稠合,仅需极少的步骤即可获得良好的总收率。