e.g. Filippa Pettersson or Cancer Res. 75(6) , 1102-12, (2015) or 10.1002/anie.201600521
Colouring matters of Australian plants. XXIII. A new synthesis of arylphenalenones and naphthoxanthenones
…, BK Merrett, GJ O'Loughlin, GA Pietersz
Index: Cooke, Raymond G.; Merrett,Bryan K.; O'Loughlin, Gary J.; Pietersz, Geoffrey A. Australian Journal of Chemistry, 1980 , vol. 33, # 10 p. 2317 - 2324
Abstract Condensation of naphthalene-2, 7-diol with 2, 4-dioxo-4-phenylbutanoic acid gives 6-hydroxy-1-oxo-9-phenyl-1H-phenalene-7-carboxylic acid which is readily converted into the lactone and on treatment with diazomethane forms only methyl 6-methoxy-1-oxo-9- phenyl-1H-phenalene-7-carboxylate. Analogous reactions of other 4-aryl-2, 4-dioxobutanoic acids with naphthalene-2, 7-diol or with 3, 6-dimethoxynaphthalene-2, 7-diol give easy ...
