The chemistry of the insoluble red woods. Part 13. Synthesis of 2-(flavan-3-yl)isoflav-3-enes and of 6-benzyl-5-phenylbenzo[a]xanthens
- 1 January 1978
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in Journal of the Chemical Society, Perkin Transactions 1
- No. 1,p. 88-92
- https://doi.org/10.1039/p19780000088
Abstract
Methoxyisoflavylium perchlorates [type (4)] have been condensed with 3-(o-hydroxyphenyl)-1-phenylpropenes [type (5; R1= H)] to yield products which are formulated as 2-(flavan-3-yl)isoflav-3-enes [type (6)]. Condensation of the perchlorates (4) with 3-(o-methoxyphenyl)-1-(p-methoxyphenyl)propenes [type (5; R1= Me)] gave derivatives formulated as 6-benzyl-5-phenylbenzo[a]xanthens [type (3; R5= Me)], analogous to the xanthens formed from per-O-methylsantalin (1) and per-O-methylsantarubin (2) by reduction to the phenolic xanthen [type (3; R5= H)] and methylation.This publication has 0 references indexed in Scilit: