exo-2,3-O,O-isopropylidene-2,3-dihydroxy-exo-6-methoxycarbonyl-7-oxabicyclo(2.2.1)heptane

methyl (3R,4S,5R)-3,4-isopropylidenedioxy-5-trifluoromethanesulfonyloxycyclohex-1-ene-1-carboxylate

莽草酸

甲基(-)-莽草酸