4-demethyl simmondsin from Simmondsia chinensis

Jojoba seed meal (Simmondsia chinensis) contains approximately 15% glucosides identified as simmondsin, 5-demethyl simmondsin, didemethyl simmondsin, along with simmondsin 2'-ferulate, 4-demethyl simmondsin 2'-ferulate, and 5-demethyl simmondsin ferulate. The new simmondsin derivative was isolated from jojoba meal by a combination of column chromatography and preparative HPLC and identified by 2D-NMR and L-SIMS as 2-(cyanomethylene)-3,4-dihydroxy-5-methocyclohexayl beta-D-glucoside or 4-demethyl simmmondsin. (C) 2000 Elsevier Science B.V. All rights reserved.