A synthesis of bikaverin (7,12-dihydro-6,11-dihydroxy-3,8-dimethoxy-1-methyl-10H-benzo[b]xanthene-7,10,12-trione) and some related benzoxanthones and quinones
作者:Dana Kjær、Anders Kjær、Elisabeth Risbjerg
DOI:10.1039/p19830002815
日期:——
Bikaverin, a biologically interesting fungal pigment with the highly oxidised benzoxanthone structure (1), has been synthesized in two steps from 2-hydroxy-4-methoxy-6-methylacetophenone (6f) and dimethyl 3,5-dimethoxyhomophthalate (7f). The synthesis involves a base-catalysed reaction between these substrates to give the substituted 11-hydroxybenzoxanthone (8f) in about 25% yield, followed by oxidation