Synthesis of Biflavonoids. Part-I

Department of Medicinal Chemistry, Institute of History of Medicine and Medical Research, Hamdard Nagar, New Delhi-110 062

Manuscript received 19 November 1983, revised 22 August 1984, accepted 27 April 1985

Syntheses of the methyl ether derivatives of 6,6"-biapigenin (4), 6,6"-bisisoflavone (11), 6,6"-bisdihydroflavonol (12) and 5,5"-bisaurone (13) (all new compounds) were done by using 5,5'-linked dimer of 4,6-dimethyl ether of phloroacetophenone (2) The structures of these compounds were established on the basis of their spectral properties