Investigations on the biosynthesis of steroids and terpenoids. Part XII. Biosynthesis of 3beta-hydroxy-triterpenoids and -steroids from (3S)-2,3-epoxy-2,3-dihydrosqualene.

(3S)-2,3-Epoxy-2,3-dihydrosqualene has been shown to be the precursor of lanosterol in pig liver, of lanosterol and ergosterol in yeast, and of cycloartenol, β-amyrin, and lupeol in germinating pea seedlings.