e.g. Filippa Pettersson or Cancer Res. 75(6) , 1102-12, (2015) or 10.1002/anie.201600521
CAN-mediated oxidations for the synthesis of xanthones and related products
MM Johnson, JM Naidoo, MA Fernandes…
Index: Johnson, Myron M.; Naidoo, Jeremy M.; Fernandes, Manuel A.; Mmutlane, Edwin M.; Van Otterlo, Willem A. L.; De Koning, Charles B. Journal of Organic Chemistry, 2010 , vol. 75, # 24 p. 8701 - 8704
Reaction of (2, 4, 5-trimethoxyphenyl)(2-hydroxyphenyl) methanone with ceric ammonium nitrate furnished the xanthone, 2, 3-dimethoxy-9 H-xanthen-9-one. Under the same conditions the related (1, 4-dimethoxynaphthalen-2-yl)(2-hydroxyphenyl) methanone resulted in the formation of 12a-methoxy-5 H-benzo [c] xanthenes 5, 7 (12a H)-dione. Other examples of this novel transformation are also outlined.
[Silva, Artur M. S.; Almeida, Lucia M. P. M.; Cavaleiro, Jose A. S.; Foces-Foces, Concepcion; Llamas-Saiz, Antonio L.; Fontenas, Christophe; Jagerovic, Nadine; Elguero, Jose Tetrahedron, 1997 , vol. 53, # 34 p. 11645 - 11658]
