Epipinoresinol, dimethyl ether

TLC has been finding increasing application in the sphere of wood research. Using chloroform-ethyl acetate (90 + 10) on silica gel G layers, Freijdenberg and Sidhu [54] have separated (+)-sesamin, xRf 78 (-f)-asarinin, 87 (+)-epiasarinin, 93 from (+)-pinoresinol dimethyl ether, 47 and (+)-epipinoresinol dimethyl ether, 55. After spraying with formalin-sulphuric acid (1 + 9) and heating to 110° C, the... 

The preparation of 21 (Chart 3) by selenium dehydrogenation of the dimethyl ethers of pinoresinol (22) and epipinoresinol (23) was reported (22) prior to the isolation of the furoguaiacins (1.9a, b) from a natural... 

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