EXTRACTIVES OF SHORT-ROTATION HARDWOOD SPECIES .2. NEOLIGNAN ESTERS OF THE WOOD OF SALIX-SACHALINENSIS FR SCHM

In further work on the extractives of Salix sachalinensis wood, three phenylpropane derivatives (I, II, and III) were isolated from the ethy l acetate solubles of the ethanol extract of the wood, and these were analyzed by UV, IR, NMR and MS spectroscopies. Two-dimensional NMR spe ctroscopy was applied for the explanation of the chemical structure. A ll three compounds had the skeleton of arylglycerol-aryl ether, and Co mpound I was comprised of dihydrobenzofuran as the partial structure. Also, these compounds were concerned with neolignan and were acylated by different acyl groups. Compounds II and III were novel neolignan es ters.