(3aR,5R,7aS)-2,2-Dimethyl-7-[2-oxo-eth-(Z)-ylidene]-5-trimethylsilanyloxy-hexahydro-benzo[1,3]dioxole-5-carboxylic acid methyl ester

(+)-Methyl 5-epi-shikimate

(3aS,7R,7aR)-methyl 7-hydroxy-2,2-dimethyl-3a,6,7,7a-tetrahydrobenzo[d][1,3]dioxole-5-carboxylate

methyl (3aR,7aR)-2,2-dimethyl-7-oxo-3a,6,7,7a-tetrahydrobenzo[d][1,3]dioxole-5-carboxylate