Toluene-4-sulfonic acid (2R,5R)-5-methyl-5-{4-[2-(3-methyl-but-2-enyl)-[1,3]dioxolan-2-yl]-pentyl}-[1,4]dioxan-2-ylmethyl ester

氰化钾

methyl 2,6-dimethyl-6,7-epoxyheptanoate

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