100753-44-4Relevant articles and documents
The Chemistry of the Insoluble Red Woods. Part 16. Some Further Observations on the Condensation of Isoflavylium Salts with 1,3-Diphenylpropenes
Afonya, Theophilus C. A.,Epelle, Faithwin B. M.,Osman, Soad A. A.,Whalley, W. Basil
, p. 3301 - 3312 (2007/10/02)
Condensation of 7-benzyloxy-6,2',3',4'-tetramethoxyisoflavylium perchlorate (1; R = PhCH2) with 1-(3,4-dimethoxyphenyl)-3-(2,4-dimethoxyphenyl)prop-1-ene (2) and with its isomeric propene gave derivatives provisionally formulated as the 6-benzyl-5-phenylbenzoxanthenes (type 6; R1=OMe, R2= PhCH2) analogous to the xanthenes derivable from per-O-methylsantarubin and per-O-methylsantalin, respectively.