Studies on quinones. VIII. The application of michael adducts from 2-hydroxy-1,4-naphthoquinones for the preparation of dihydronaphthopyrandiones
作者:R. Cassis、R. Tapia、J. Valderrama
DOI:10.1002/jhet.5570190233
日期:1982.3
Dihydronaphthopyran-5,10-diones 7,13, 16 and their corresponding dihydronaphthopyran-5,6-diones 8, 14,17 have been obtained starting from Michael adducts of 2-hydroxy- and 2-hydroxy-7-methoxy-1,4-naph-thoquinone (1, 9). An efficient synthesis of hydroxyhydrolapachol (4) employing 2-hydroxy-3-(3-oxobutyl)-1,4-naphthoquinone (5) is described.
从2-羟基-和2-羟基-7-甲氧基-1的迈克尔加合物开始获得二氢萘并吡喃-5,10-二酮7,13,16及其相应的二氢萘并吡喃-5,6-二酮8,14,17。 4-萘醌(1,9)。描述了使用2-羟基-3-(3-氧丁基)-1,4-萘醌(5)的羟基氢苯酚(4)的有效合成。