2-Methyl-2-(4-oxo-pentyl)-malonic acid

2-Methyl-2-[3-(2-methyl-[1,3]dioxolan-2-yl)-propyl]-malonic acid diethyl ester

2α-methyl-2β-<4,8-dimethyl-5-(ethylenedioxy)-7-nonenyl>-5α-(hydroxymethyl)-1,4-dioxane

2-Methyl-5-[(2R,5R)-2-methyl-5-(tetrahydro-pyran-2-yloxymethyl)-[1,4]dioxan-2-yl]-pentanoic acid

2α-methyl-2β-<4,8-dimethyl-5-(ethylenedioxy)-7-nonenyl>-5α-(cyanomethyl)-1,4-dioxane