Elvirol methyl ether has been syn the sized from p-cresol via 2-(2-cyclopentenyl)-4-methylphenyl methyl ether by ozonolysis, dithioacetalization, re duc tion, and Wittig re ac tion. The over all yield was 18.8%. ... Elvirol (1a), a me tab o lite of Elvira biflora DC. (fam ily Compositae),1 pos sesses a car bon skel e ton which does not con form to the “isoprene rule”, and is likely to arise in na ture from -curcumene by un der go ing Ar-epoxidation and sub se - quent 1,2-alkyl ...
