

ONE-POT PROPARGYLATION AND CLAISEN-TYPE REARRANGEMENT FOR NATURAL LIGNANS MATAIRESINOL AND α-CONIDENDRIN

Abstract
Improved methods for one-pot propargylation and Claisen rearrangement have been devised for natural lignans – matairesinol and α-conidendrin. The rearrangement was regiospecific, yielding only 2-methylbenzofuran derivatives.
Keywords
benzofurans; lignans; propargyl ethers; superacids; Claisen rearrangement; natural compounds; propargylation
Latvian Institute of Organic Synthesis - Aizkraukles iela, 21, Riga, LV-1006, Latvia - hgs@osi.lv